{"id":48187,"date":"2025-11-05T08:00:00","date_gmt":"2025-11-05T13:00:00","guid":{"rendered":"https:\/\/www.jinfiniti.com\/blog\/?p=48187"},"modified":"2025-11-18T08:43:00","modified_gmt":"2025-11-18T13:43:00","slug":"creatine-kinase-test-levels","status":"publish","type":"post","link":"https:\/\/www.jinfiniti.com\/blog\/creatine-kinase-test-levels\/","title":{"rendered":"Creatine Kinase Test Levels: Normal, High, and What It Means"},"content":{"rendered":"<style>.kb-table-of-content-nav.kb-table-of-content-id48187_ab3c20-8d .kb-table-of-content-wrap{padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-right:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);padding-left:var(--global-kb-spacing-sm, 1.5rem);border-top:1px solid #000000;border-right:1px solid #000000;border-bottom:1px solid #000000;border-left:1px solid #000000;}.kb-table-of-content-nav.kb-table-of-content-id48187_ab3c20-8d .kb-table-of-contents-title-wrap{padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.kb-table-of-content-nav.kb-table-of-content-id48187_ab3c20-8d .kb-table-of-contents-title-wrap{color:#4a25aa;}.kb-table-of-content-nav.kb-table-of-content-id48187_ab3c20-8d .kb-table-of-contents-title{color:#4a25aa;font-family:Jost;font-weight:500;font-style:normal;}.kb-table-of-content-nav.kb-table-of-content-id48187_ab3c20-8d .kb-table-of-content-wrap .kb-table-of-content-list{font-size:16px;font-weight:regular;font-style:normal;margin-top:var(--global-kb-spacing-sm, 1.5rem);margin-right:0px;margin-bottom:0px;margin-left:0px;}@media all and (max-width: 1024px){.kb-table-of-content-nav.kb-table-of-content-id48187_ab3c20-8d .kb-table-of-content-wrap{border-top:1px solid #000000;border-right:1px solid #000000;border-bottom:1px solid #000000;border-left:1px solid #000000;}}@media all and (max-width: 767px){.kb-table-of-content-nav.kb-table-of-content-id48187_ab3c20-8d .kb-table-of-content-wrap{border-top:1px solid #000000;border-right:1px solid #000000;border-bottom:1px solid #000000;border-left:1px solid #000000;}}<\/style>\n\n\n<p class=\"wp-block-paragraph\">Your doctor may have ordered a creatine kinase (CK) test for you, and you\u2019re wondering what this enzyme says about your health. CK can indicate all sorts of things, from a recent workout to severe muscle damage, so it can be hard to know what\u2019s normal without any context.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This guide explains what creatine kinase testing is and what it measures, what levels of CK are normal, and when elevated CK levels are a concern and when they are not.<\/p>\n\n\n<style>.kadence-column48187_55504a-0f > .kt-inside-inner-col{padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-right:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);padding-left:var(--global-kb-spacing-md, 2rem);}.kadence-column48187_55504a-0f > .kt-inside-inner-col{border-top:1px solid #000000;border-right:1px solid #000000;border-bottom:5px solid #000000;border-left:1px solid #000000;}.kadence-column48187_55504a-0f > .kt-inside-inner-col,.kadence-column48187_55504a-0f > .kt-inside-inner-col:before{border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-right-radius:10px;border-bottom-left-radius:10px;}.kadence-column48187_55504a-0f > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column48187_55504a-0f > .kt-inside-inner-col{flex-direction:column;}.kadence-column48187_55504a-0f > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column48187_55504a-0f > .kt-inside-inner-col{background-color:rgba(230, 234, 245, 0.35);}.kadence-column48187_55504a-0f > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column48187_55504a-0f{position:relative;}@media all and (max-width: 1024px){.kadence-column48187_55504a-0f > .kt-inside-inner-col{border-top:1px solid #000000;border-right:1px solid #000000;border-bottom:5px solid #000000;border-left:1px solid #000000;flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column48187_55504a-0f > .kt-inside-inner-col{border-top:1px solid #000000;border-right:1px solid #000000;border-bottom:5px solid #000000;border-left:1px solid #000000;flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column48187_55504a-0f\"><div class=\"kt-inside-inner-col\">\n<h3 class=\"wp-block-heading\">Highlights<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Normal CK ranges vary widely by gender, race, age, and physical activity level, making one-size-fits-all reference ranges unreliable<\/li>\n\n\n\n<li>Exercise can triple your CK levels for up to a week, so timing matters when testing<\/li>\n\n\n\n<li>Levels above 5,000-10,000 U\/L may signal rhabdomyolysis, a medical emergency requiring immediate treatment<\/li>\n\n\n\n<li>African Americans naturally have CK levels approximately 70% higher than other groups without any health concerns<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">What is Creatine Kinase?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Creatine kinase is an enzyme found mainly in your heart, brain, and skeletal muscles.&nbsp;It helps produce <a href=\"https:\/\/www.jinfiniti.com\/blog\/what-is-cellular-energy\/\">cellular energy<\/a> by converting <a href=\"https:\/\/www.jinfiniti.com\/blog\/creatine-and-atp\/\">creatine and ATP<\/a> to phosphocreatine, which serves as a reserve for tissues with high energy needs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When muscle or other CK-rich tissues get damaged, <a href=\"https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK546624\/\" target=\"_blank\" rel=\"noopener\">the enzyme leaks into your bloodstream<\/a>. It&#8217;s this release that makes it a valuable diagnostic marker.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How CK Works in Your Body<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You can think of creatine kinase as a battery charger in your cells. It helps regenerate ATP to keep your muscles and brain energized during exertion<sup>[1]<\/sup>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There are three types:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CK-MM (skeletal muscle)&nbsp;<\/li>\n\n\n\n<li>CK-MB (heart muscle)&nbsp;<\/li>\n\n\n\n<li>CK-BB (brain muscle)&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The ratio of each type in the blood can help determine which tissue is damaged.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Why Doctors Test CK Levels<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If you have muscle weakness, unexplained pain, or signs of a heart attack, your doctor may order a CK blood test. It&#8217;s also used to monitor people who take&nbsp;statins and develop muscle problems<sup>[2]<\/sup>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CK testing is used to diagnose muscular dystrophy, inflammatory muscle diseases and other neuromuscular disorders. It involves taking a simple blood sample.&nbsp;<\/p>\n\n\n<style>.kadence-column48187_676be3-da > .kt-inside-inner-col{padding-top:var(--global-kb-spacing-xs, 1rem);padding-right:var(--global-kb-spacing-xs, 1rem);padding-bottom:var(--global-kb-spacing-xs, 1rem);padding-left:var(--global-kb-spacing-xs, 1rem);}.kadence-column48187_676be3-da > .kt-inside-inner-col{border-top:2px solid rgba(223,211,255,0.3);border-right:2px solid rgba(223,211,255,0.3);border-bottom:2px solid rgba(223,211,255,0.3);border-left:2px solid rgba(223,211,255,0.3);}.kadence-column48187_676be3-da > .kt-inside-inner-col,.kadence-column48187_676be3-da > .kt-inside-inner-col:before{border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-right-radius:10px;border-bottom-left-radius:10px;}.kadence-column48187_676be3-da > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column48187_676be3-da > .kt-inside-inner-col{flex-direction:column;}.kadence-column48187_676be3-da > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column48187_676be3-da > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column48187_676be3-da{position:relative;}@media all and (max-width: 1024px){.kadence-column48187_676be3-da > .kt-inside-inner-col{border-top:2px solid rgba(223,211,255,0.3);border-right:2px solid rgba(223,211,255,0.3);border-bottom:2px solid rgba(223,211,255,0.3);border-left:2px solid rgba(223,211,255,0.3);flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column48187_676be3-da > .kt-inside-inner-col{border-top:2px solid rgba(223,211,255,0.3);border-right:2px solid rgba(223,211,255,0.3);border-bottom:2px solid rgba(223,211,255,0.3);border-left:2px solid rgba(223,211,255,0.3);flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column48187_676be3-da\"><div class=\"kt-inside-inner-col\"><style>.kb-row-layout-id48187_6205de-67 > .kt-row-column-wrap{align-content:center;}:where(.kb-row-layout-id48187_6205de-67 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:center;}.kb-row-layout-id48187_6205de-67 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-sm, 1rem);row-gap:var(--global-kb-gap-sm, 1rem);padding-top:0px;padding-right:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:0px;padding-left:var(--global-kb-spacing-sm, 1.5rem);grid-template-columns:minmax(0, 2fr) minmax(0, 1fr);}.kb-row-layout-id48187_6205de-67 > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id48187_6205de-67 > .kt-row-column-wrap{grid-template-columns:minmax(0, 2fr) minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id48187_6205de-67 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id48187_6205de-67 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(1 of *:not(style)){order:2;}.kb-row-layout-id48187_6205de-67 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(2 of *:not(style)){order:1;}.kb-row-layout-id48187_6205de-67 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(3 of *:not(style)){order:12;}.kb-row-layout-id48187_6205de-67 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(4 of *:not(style)){order:11;}.kb-row-layout-id48187_6205de-67 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(5 of *:not(style)){order:22;}.kb-row-layout-id48187_6205de-67 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(6 of *:not(style)){order:21;}.kb-row-layout-id48187_6205de-67 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(7 of *:not(style)){order:32;}.kb-row-layout-id48187_6205de-67 > .kt-row-column-wrap > .wp-block-kadence-column:nth-child(8 of *:not(style)){order:31;}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id48187_6205de-67 aligncenter wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-row-layout-left-golden kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-middle\">\n<style>.kadence-column48187_840bdf-82 > .kt-inside-inner-col{display:flex;}.kadence-column48187_840bdf-82 > .kt-inside-inner-col,.kadence-column48187_840bdf-82 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column48187_840bdf-82 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column48187_840bdf-82 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}.kadence-column48187_840bdf-82 > .kt-inside-inner-col > .aligncenter{width:100%;}.kt-row-column-wrap > .kadence-column48187_840bdf-82{align-self:center;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column48187_840bdf-82{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column48187_840bdf-82 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}.kadence-column48187_840bdf-82 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column48187_840bdf-82{position:relative;}@media all and (max-width: 1024px){.kt-row-column-wrap > .kadence-column48187_840bdf-82{align-self:center;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column48187_840bdf-82{align-self:auto;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column48187_840bdf-82 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 1024px){.kadence-column48187_840bdf-82 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kt-row-column-wrap > .kadence-column48187_840bdf-82{align-self:center;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column48187_840bdf-82{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column48187_840bdf-82 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}.kadence-column48187_840bdf-82 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column48187_840bdf-82\"><div class=\"kt-inside-inner-col\"><style>.wp-block-kadence-advancedheading.kt-adv-heading48187_0b636c-60, .wp-block-kadence-advancedheading.kt-adv-heading48187_0b636c-60[data-kb-block=\"kb-adv-heading48187_0b636c-60\"]{max-width:75%;margin-right:auto;margin-left:auto;margin-bottom:0px;text-align:center;font-size:var(--global-kb-font-size-sm, 0.9rem);font-style:normal;background-color:rgba(223,211,255,0.26);border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-right-radius:10px;border-bottom-left-radius:10px;}.wp-block-kadence-advancedheading.kt-adv-heading48187_0b636c-60 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading48187_0b636c-60[data-kb-block=\"kb-adv-heading48187_0b636c-60\"] mark.kt-highlight{font-style:normal;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading48187_0b636c-60 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading48187_0b636c-60[data-kb-block=\"kb-adv-heading48187_0b636c-60\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<p class=\"kt-adv-heading48187_0b636c-60 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading48187_0b636c-60\">Comprehensive Health Assessment<\/p>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading48187_6ff7d5-f4, .wp-block-kadence-advancedheading.kt-adv-heading48187_6ff7d5-f4[data-kb-block=\"kb-adv-heading48187_6ff7d5-f4\"]{text-align:center;font-size:28px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading48187_6ff7d5-f4 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading48187_6ff7d5-f4[data-kb-block=\"kb-adv-heading48187_6ff7d5-f4\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading48187_6ff7d5-f4 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading48187_6ff7d5-f4[data-kb-block=\"kb-adv-heading48187_6ff7d5-f4\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<p class=\"kt-adv-heading48187_6ff7d5-f4 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading48187_6ff7d5-f4\"><strong>Track CK with 27 other longevity markers<\/strong>.<\/p>\n\n\n<style>.wp-block-kadence-advancedbtn.kb-btns48187_81f301-93{gap:var(--global-kb-gap-xs, 0.5rem );justify-content:center;align-items:center;}.kt-btns48187_81f301-93 .kt-button{font-weight:normal;font-style:normal;}.kt-btns48187_81f301-93 .kt-btn-wrap-0{margin-right:5px;}.wp-block-kadence-advancedbtn.kt-btns48187_81f301-93 .kt-btn-wrap-0 .kt-button{color:#555555;border-color:#555555;}.wp-block-kadence-advancedbtn.kt-btns48187_81f301-93 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns48187_81f301-93 .kt-btn-wrap-0 .kt-button:focus{color:#ffffff;border-color:#444444;}.wp-block-kadence-advancedbtn.kt-btns48187_81f301-93 .kt-btn-wrap-0 .kt-button::before{display:none;}.wp-block-kadence-advancedbtn.kt-btns48187_81f301-93 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns48187_81f301-93 .kt-btn-wrap-0 .kt-button:focus{background:#444444;}<\/style>\n<div class=\"wp-block-kadence-advancedbtn kb-buttons-wrap kb-btns48187_81f301-93\"><style>ul.menu .wp-block-kadence-advancedbtn .kb-btn48187_1fff4e-4f.kb-button{width:initial;}.wp-block-kadence-advancedbtn .kb-btn48187_1fff4e-4f.kb-button{color:#ffffff;background:#000000;font-family:Jost;font-weight:400;border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-right-radius:10px;border-bottom-left-radius:10px;box-shadow:1px 1px 3px 0px rgba(0, 0, 0, 0.2);}<\/style><a class=\"kb-button kt-button button kb-btn48187_1fff4e-4f kt-btn-size-standard kt-btn-width-type-auto kb-btn-global-fill kt-btn-has-text-true kt-btn-has-svg-false wp-block-kadence-singlebtn\" href=\"https:\/\/www.jinfiniti.com\/product\/agingsos-advanced-panel\/\"><span class=\"kt-btn-inner-text\">Get AgingSOS<sup>\u00ae<\/sup><\/span><\/a><\/div>\n<\/div><\/div>\n\n\n<style>.kadence-column48187_fa69c8-e9 > .kt-inside-inner-col{display:flex;}.kadence-column48187_fa69c8-e9 > .kt-inside-inner-col,.kadence-column48187_fa69c8-e9 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column48187_fa69c8-e9 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column48187_fa69c8-e9 > .kt-inside-inner-col{flex-direction:column;justify-content:center;align-items:center;}.kadence-column48187_fa69c8-e9 > .kt-inside-inner-col > .kb-image-is-ratio-size{align-self:stretch;}.kadence-column48187_fa69c8-e9 > .kt-inside-inner-col > .wp-block-kadence-advancedgallery{align-self:stretch;}.kadence-column48187_fa69c8-e9 > .kt-inside-inner-col > .aligncenter{width:100%;}.kt-row-column-wrap > .kadence-column48187_fa69c8-e9{align-self:center;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column48187_fa69c8-e9{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column48187_fa69c8-e9 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}.kadence-column48187_fa69c8-e9 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column48187_fa69c8-e9{position:relative;}@media all and (max-width: 1024px){.kt-row-column-wrap > .kadence-column48187_fa69c8-e9{align-self:center;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column48187_fa69c8-e9{align-self:auto;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column48187_fa69c8-e9 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 1024px){.kadence-column48187_fa69c8-e9 > .kt-inside-inner-col{flex-direction:column;justify-content:center;align-items:center;}}@media all and (max-width: 767px){.kt-row-column-wrap > .kadence-column48187_fa69c8-e9{align-self:center;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column48187_fa69c8-e9{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column48187_fa69c8-e9 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}.kadence-column48187_fa69c8-e9 > .kt-inside-inner-col{flex-direction:column;justify-content:center;align-items:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column48187_fa69c8-e9 kb-section-dir-vertical\"><div class=\"kt-inside-inner-col\"><style>.kb-image48187_435847-d0 .kb-image-has-overlay:after{opacity:0.3;border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-right-radius:10px;border-bottom-left-radius:10px;}.kb-image48187_435847-d0 img.kb-img, .kb-image48187_435847-d0 .kb-img img{border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-right-radius:10px;border-bottom-left-radius:10px;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image48187_435847-d0 kb-image-is-ratio-size\"><div class=\"kb-is-ratio-image kb-image-ratio-land43\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/www.jinfiniti.com\/blog\/wp-content\/uploads\/2025\/10\/agingsos-new-cta.png\" alt=\"Jinfiniti AgingSOS green gradient background\" class=\"kb-img wp-image-47776\" title=\"\" srcset=\"https:\/\/www.jinfiniti.com\/blog\/wp-content\/uploads\/2025\/10\/agingsos-new-cta.png 800w, https:\/\/www.jinfiniti.com\/blog\/wp-content\/uploads\/2025\/10\/agingsos-new-cta-480x360.png 480w, https:\/\/www.jinfiniti.com\/blog\/wp-content\/uploads\/2025\/10\/agingsos-new-cta-768x576.png 768w, https:\/\/www.jinfiniti.com\/blog\/wp-content\/uploads\/2025\/10\/agingsos-new-cta-600x450.png 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/div><\/figure>\n<\/div><\/div>\n\n<\/div><\/div><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Normal Creatine Kinase Ranges<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The range of \u201cnormal\u201d for CK levels can vary considerably, which is why reference ranges are not as helpful as one might think.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">CK Reference Ranges for Adults<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Most labs report a normal range of <\/strong><a href=\"https:\/\/medlineplus.gov\/lab-tests\/creatine-kinase\/\" target=\"_blank\" rel=\"noopener\">22-198 U\/L for adults<\/a>. But that broad range doesn&#8217;t account for individual differences.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Your baseline could sit comfortably at 50 U\/L or 250 U\/L depending on your muscle mass, activity level, and genetics. Context matters more than the number alone.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How Gender Affects Your Numbers<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Men typically show higher CK levels than women due to greater muscle mass. Research shows mean levels of 127.3 U\/L in males versus 85.5 U\/L in females.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gender-specific ranges include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Males: 39-308 U\/L<\/li>\n\n\n\n<li>Females: 26-192 U\/L<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Women&#8217;s CK levels drop sharply around the time of first menstruation and remain lower throughout adulthood.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Population Differences<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">African Americans consistently show substantially higher baseline CK levels than other racial groups. Black men have median levels of 135-146 U\/L compared to 51-64 U\/L in white men.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Studies indicate serum CK levels are approximately 70% higher in healthy Black individuals. For asymptomatic African American men, CK levels up to 1,200 U\/L can fall within normal range<sup>[3]<\/sup>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#8220;The most notable factor that contributed to higher CK levels was Black race,&#8221; according to <a href=\"https:\/\/drgreghall.com\/elevated-ck-or-creatinine-kinase-level-in-african-americans-this-may-not-be-a-problem\/\" target=\"_blank\" rel=\"noopener\">research published in Medicine<\/a>. Differences in levels are due to the differential production or clearance of CK and not due to differences in muscle mass.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Age-Related Changes<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CK levels shift throughout your lifespan. Newborns can have levels up to 500 U\/L due to birth trauma, while children aged 1-15 typically show 60-305 U\/L.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In adults, CK tends to decrease with age as muscle mass declines. Boys see sharp increases at puberty, reaching 14.48 \u00b5kat\/L by age 18, while girls plateau around 5.74 \u00b5kat\/L<sup>[4]<\/sup>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Athletes Have Higher Baselines<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Regular training naturally elevates your baseline CK. Athletes can have normal ranges up to 300-400 U\/L, substantially higher than sedentary individuals.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Peak CK level is reached 24-72 hours after exercise and can take up to a week to return to baseline, especially after eccentric exercise such as downhill running. Exercise can increase CK up to three times the normal level<sup>[5]<\/sup>.<\/p>\n\n\n<style>.kb-image48187_29a602-3f .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image48187_29a602-3f size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"672\" src=\"https:\/\/www.jinfiniti.com\/blog\/wp-content\/uploads\/2025\/11\/ck-levels-1024x672.png\" alt=\"Infographic showing normal creatine kinase (CK) levels.\" class=\"kb-img wp-image-48192\" title=\"\" srcset=\"https:\/\/www.jinfiniti.com\/blog\/wp-content\/uploads\/2025\/11\/ck-levels-1024x672.png 1024w, https:\/\/www.jinfiniti.com\/blog\/wp-content\/uploads\/2025\/11\/ck-levels-480x315.png 480w, https:\/\/www.jinfiniti.com\/blog\/wp-content\/uploads\/2025\/11\/ck-levels-768x504.png 768w, https:\/\/www.jinfiniti.com\/blog\/wp-content\/uploads\/2025\/11\/ck-levels-600x394.png 600w, https:\/\/www.jinfiniti.com\/blog\/wp-content\/uploads\/2025\/11\/ck-levels.png 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What Causes Elevated Creatine Kinase?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dozens of factors can raise your CK levels. Some are harmless and temporary, while others signal serious medical conditions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Exercise and Physical Activity<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Physical activity remains the most common cause of CK elevation. Your workout intensity, type of exercise, and recovery time all influence how high levels climb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Eccentric exercises cause the biggest spikes. If you lifted weights, ran hills, or tried a new activity, expect CK to rise without any medical concern.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Muscle Injury and Damage<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Direct trauma to muscles releases CK into circulation. Falls, accidents, prolonged immobility, or even vigorous massage can temporarily elevate levels.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Intramuscular injections and recent vaccinations also cause mild, transient increases. These resolve on their own within days to weeks.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Medical Conditions That Raise CK<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Numerous health issues affect CK levels:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hypothyroidism (60-90% of patients show elevation)<sup>[6]<\/sup><\/li>\n\n\n\n<li><a href=\"https:\/\/www.parentprojectmd.org\/about-duchenne\/is-it-duchenne\/diagnosis\/\" target=\"_blank\" rel=\"noopener\">Muscular dystrophy<\/a> (10-100 times normal)<\/li>\n\n\n\n<li>Inflammatory muscle diseases<\/li>\n\n\n\n<li>Certain infections<\/li>\n\n\n\n<li>Some medications, particularly statins<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Your doctor will consider symptoms, medical history, and other test results to determine the cause.<\/p>\n\n\n<style>.kadence-column48187_01eb6b-d9 > .kt-inside-inner-col{padding-top:var(--global-kb-spacing-xs, 1rem);padding-right:var(--global-kb-spacing-xs, 1rem);padding-bottom:var(--global-kb-spacing-xs, 1rem);padding-left:var(--global-kb-spacing-sm, 1.5rem);}.kadence-column48187_01eb6b-d9 > .kt-inside-inner-col{border-top:1px solid #000000;border-right:1px solid #000000;border-bottom:1px solid #000000;border-left:4px solid #000000;}.kadence-column48187_01eb6b-d9 > .kt-inside-inner-col,.kadence-column48187_01eb6b-d9 > .kt-inside-inner-col:before{border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-right-radius:10px;border-bottom-left-radius:10px;}.kadence-column48187_01eb6b-d9 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column48187_01eb6b-d9 > .kt-inside-inner-col{flex-direction:column;}.kadence-column48187_01eb6b-d9 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column48187_01eb6b-d9 > .kt-inside-inner-col{background-color:rgba(230, 234, 245, 0.35);}.kadence-column48187_01eb6b-d9 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column48187_01eb6b-d9{position:relative;}@media all and (max-width: 1024px){.kadence-column48187_01eb6b-d9 > .kt-inside-inner-col{border-top:1px solid #000000;border-right:1px solid #000000;border-bottom:1px solid #000000;border-left:4px solid #000000;flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column48187_01eb6b-d9 > .kt-inside-inner-col{border-top:1px solid #000000;border-right:1px solid #000000;border-bottom:1px solid #000000;border-left:4px solid #000000;flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column48187_01eb6b-d9\"><div class=\"kt-inside-inner-col\">\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>\ud83e\uddec<\/strong> MORE READING<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Building strength after 40 requires different approaches.<\/strong> These <a href=\"https:\/\/www.jinfiniti.com\/blog\/anti-aging-exercises\/\"><strong>anti-aging exercises for longevity<\/strong><\/a> support healthy muscle mass without excessive strain.<\/li>\n\n\n\n<li><strong>Scientists call <a href=\"https:\/\/www.jinfiniti.com\/blog\/klotho-protein\/\">Klotho<\/a> the &#8220;longevity protein&#8221; because it protects against DNA damage<\/strong>. Discover how this remarkable protein influences healthspan.<\/li>\n\n\n\n<li><strong>Energy production depends on more than exercise.<\/strong> <a href=\"https:\/\/www.jinfiniti.com\/blog\/best-mitochondrial-supplements\/\"><strong>Mitochondrial health supplements<\/strong><\/a> provide cellular support when CK levels suggest muscle stress.<\/li>\n\n\n\n<li><strong>Recovery matters as much as training.<\/strong> Learn which <a href=\"https:\/\/www.jinfiniti.com\/blog\/natural-remedies-for-muscle-pain\/\"><strong>natural remedies for muscle pain<\/strong><\/a> can help without masking serious problems.<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">When High CK Levels Signal Danger<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">While many CK elevations are benign, some require immediate medical attention. Understanding when to worry can be lifesaving.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Rhabdomyolysis: A Medical Emergency<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Rhabdomyolysis involves rapid muscle breakdown, with CK levels reaching 50,000-200,000 U\/L or higher. This condition is diagnosed when CK reaches at least five times normal, though levels above 5,000 U\/L raise serious concern<sup>[7]<\/sup>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The released muscle content, including myoglobin, can cause acute kidney injury. Symptoms include severe muscle pain, weakness, and dark urine, though many patients don&#8217;t show all three.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Causes range from extreme exertion and heat exposure to certain medications, alcohol abuse, and infections. Treatment requires aggressive IV hydration and close kidney function monitoring.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Statin-Related Muscle Problems<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Statins can cause muscle effects ranging from mild aches to severe breakdown. The incidence of myopathy with statin monotherapy is 0.1-0.5%, while rhabdomyolysis occurs in less than 0.2% of cases<sup>[2]<\/sup>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here&#8217;s something surprising: research published in Annals of Internal Medicine showed &#8220;some patients who develop muscle symptoms while receiving statin therapy have demonstrable weakness and histopathologic findings of myopathy despite normal serum creatine kinase levels.&#8221;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Normal CK doesn&#8217;t rule out statin-induced muscle injury. Muscle biopsies revealed mitochondrial dysfunction even when CK remained normal.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Hypothyroidism and CK Elevation<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Underactive thyroid is a commonly missed cause of elevated CK. Approximately 60-90% of hypothyroid patients show elevated CK activity, with levels averaging five-fold greater than normal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Severe cases can present remarkably high numbers. Case reports document CK of 9,000 U\/L completely normalizing after three months of thyroid hormone replacement<sup>[8]<\/sup>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#8220;Adequate therapy leads to complete recovery, including myopathy,&#8221; according to research from the Ludwig Boltzmann Institute. If your CK is elevated without clear cause, ask your doctor about checking thyroid function.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">When Should You Get a CK Test?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Knowing when CK testing makes sense helps you advocate for appropriate care.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dr. Jin-Xiong She explains: &#8220;Creatine kinase testing serves as an important window into muscle health and&nbsp;metabolic function. When interpreted correctly alongside other biomarkers, it helps us understand not just muscle damage, but overall cellular energy status.&#8221;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Common Symptoms to Watch For<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Several signs warrant CK testing:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Unexplained muscle weakness or pain<\/li>\n\n\n\n<li>Severe muscle tenderness<\/li>\n\n\n\n<li>Dark-colored urine (tea or cola-colored)<\/li>\n\n\n\n<li>Extreme fatigue with muscle soreness<\/li>\n\n\n\n<li>Difficulty climbing stairs or lifting objects<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If you&#8217;re taking statins and develop any muscle complaints, request testing even if symptoms seem mild. Early detection prevents progression to more serious problems.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Who Needs Regular Monitoring<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Certain people benefit from routine CK checks:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Anyone taking statins or fibrates<\/li>\n\n\n\n<li>Athletes in intense training programs<\/li>\n\n\n\n<li>People with known muscle diseases<\/li>\n\n\n\n<li>Those with a family history of muscular dystrophy<\/li>\n\n\n\n<li>Individuals with <a href=\"https:\/\/www.jinfiniti.com\/blog\/chronic-fatigue-supplements\/\">chronic fatigue<\/a> and muscle symptoms<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Regular monitoring can establish your personal baseline, making it easier to spot meaningful changes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Understanding Your Serum CK Test Results<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Raw numbers tell only part of the story. Proper interpretation requires considering multiple factors together.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What Do the Numbers Mean?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CK levels fall into broad categories:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Normal to mildly elevated (up to 500 U\/L):<\/strong> Often related to recent exercise, minor trauma, or neuropathies. Repeat testing after a week of rest usually clarifies the picture.<\/li>\n\n\n\n<li><strong>Moderate elevation (500-5,000 U\/L):<\/strong> May indicate inflammatory muscle diseases, thyroid problems, or medication effects. Requires investigation but isn&#8217;t typically an emergency.<\/li>\n\n\n\n<li><strong>Severe elevation (5,000-10,000+ U\/L):<\/strong> Suggests rhabdomyolysis or severe muscle disease. Needs immediate medical evaluation to prevent kidney damage.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Remember that African Americans may have levels up to 1,200 U\/L while remaining completely healthy.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">When to See a Doctor<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Seek immediate care if you have:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CK above 10,000 U\/L with any symptoms<\/li>\n\n\n\n<li>Dark urine with muscle pain<\/li>\n\n\n\n<li>Severe muscle weakness affecting daily activities<\/li>\n\n\n\n<li>Muscle symptoms after starting new medications<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For persistently elevated levels above 1,000 U\/L, schedule a non-urgent appointment. Your doctor can order additional tests to identify the underlying cause and determine if treatment is needed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Testing CK alongside other <a href=\"https:\/\/www.jinfiniti.com\/blog\/longevity-testing-guide-biomarkers\/\">longevity biomarkers<\/a> provides a more complete picture of your health status. Our <a href=\"https:\/\/www.jinfiniti.com\/product\/agingsos-advanced-panel\/\">AgingSOS Advanced Panel<\/a> measures CK along with 27 other markers related to inflammation, oxidative stress, and <a href=\"https:\/\/www.jinfiniti.com\/blog\/cellular-senescence-and-aging\/\">cellular senescence<\/a>.<\/p>\n\n\n<style>.kadence-column48187_94ecd4-3b > .kt-inside-inner-col{padding-top:var(--global-kb-spacing-xs, 1rem);padding-right:var(--global-kb-spacing-xs, 1rem);padding-bottom:var(--global-kb-spacing-xs, 1rem);padding-left:var(--global-kb-spacing-xs, 1rem);}.kadence-column48187_94ecd4-3b > .kt-inside-inner-col{border-top:1px solid #000000;border-right:1px solid #000000;border-bottom:5px solid #000000;border-left:1px solid #000000;}.kadence-column48187_94ecd4-3b > .kt-inside-inner-col,.kadence-column48187_94ecd4-3b > .kt-inside-inner-col:before{border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-right-radius:10px;border-bottom-left-radius:10px;}.kadence-column48187_94ecd4-3b > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column48187_94ecd4-3b > .kt-inside-inner-col{flex-direction:column;}.kadence-column48187_94ecd4-3b > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column48187_94ecd4-3b > .kt-inside-inner-col{background-color:rgba(230, 234, 245, 0.35);}.kadence-column48187_94ecd4-3b > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column48187_94ecd4-3b{position:relative;}@media all and (max-width: 1024px){.kadence-column48187_94ecd4-3b > .kt-inside-inner-col{border-top:1px solid #000000;border-right:1px solid #000000;border-bottom:5px solid #000000;border-left:1px solid #000000;flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column48187_94ecd4-3b > .kt-inside-inner-col{border-top:1px solid #000000;border-right:1px solid #000000;border-bottom:5px solid #000000;border-left:1px solid #000000;flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column48187_94ecd4-3b\"><div class=\"kt-inside-inner-col\">\n<h3 class=\"wp-block-heading\">Referenced Sources<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Weiss RG, Gerstenblith G, Bottomley PA. ATP flux through creatine kinase in the normal, stressed, and failing human heart. Proceedings of the National Academy of Sciences; 2005. <a href=\"https:\/\/doi.org\/10.1073\/pnas.0408962102\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/doi.org\/10.1073\/pnas.0408962102<\/a><\/li>\n\n\n\n<li>Vinci P, Panizon E, Tosoni LM, Cerrato C, Pellicori F, Mearelli F, et al. Statin-Associated Myopathy: Emphasis on Mechanisms and Targeted Therapy. MDPI AG; 2021. <a href=\"https:\/\/doi.org\/10.3390\/ijms222111687\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/doi.org\/10.3390\/ijms222111687<\/a><\/li>\n\n\n\n<li>Brewster LM, Coronel CMD, Sluiter W, Clark JF, van Montfrans GA. Ethnic Differences in Tissue Creatine Kinase Activity: An Observational Study. Public Library of Science (PLoS); 2012. <a href=\"https:\/\/doi.org\/10.1371\/journal.pone.0032471\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/doi.org\/10.1371\/journal.pone.0032471<\/a><\/li>\n\n\n\n<li>Lane RJM, Roses AD. Variation of serum creatine kinase levels with age in normal females: implications for genetic counselling in Duchenne muscular dystrophy. Elsevier BV; 1981. <a href=\"https:\/\/doi.org\/10.1016\/0009-8981(81)90442-3\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/doi.org\/10.1016\/0009-8981(81)90442-3<\/a><\/li>\n\n\n\n<li>Totsuka M, Nakaji S, Suzuki K, Sugawara K, Sato K. Break point of serum creatine kinase release after endurance exercise. American Physiological Society; 2002. <a href=\"https:\/\/doi.org\/10.1152\/japplphysiol.01270.2001\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/doi.org\/10.1152\/japplphysiol.01270.2001<\/a><\/li>\n\n\n\n<li>Prakash A, Lal A, Negi K. Serum Creatine Kinase Activity in Thyroid Disorders. 2007.<\/li>\n\n\n\n<li>Torres P, Helmstetter JA, Kaye A, Kaye A. Rhabdomyolysis: pathogenesis, diagnosis, and treatment. Ochsner Journal 2015;15 1:58\u201369.<\/li>\n\n\n\n<li>Finsterer J, St\u00f6llberger C, Grossegger C, Kroiss A. Hypothyroid Myopathy with Unusually High Serum Creatine Kinase Values. S. Karger AG; 1999. <a href=\"https:\/\/doi.org\/10.1159\/000023462\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/doi.org\/10.1159\/000023462<\/a><\/li>\n<\/ol>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Your doctor may have ordered a creatine kinase (CK) test for you, and you\u2019re wondering what this enzyme says about your health. CK can indicate all sorts of things, from a recent workout to severe muscle damage, so it can be hard to know what\u2019s normal without any context. This guide explains what creatine kinase [&hellip;]<\/p>\n","protected":false},"author":10909,"featured_media":48189,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[321,431,332,335],"tags":[],"class_list":["post-48187","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-at-home-testing","category-biomarkers","category-muscle-loss-and-weakness","category-thyroid-diseases"],"_links":{"self":[{"href":"https:\/\/www.jinfiniti.com\/blog\/wp-json\/wp\/v2\/posts\/48187","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jinfiniti.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jinfiniti.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jinfiniti.com\/blog\/wp-json\/wp\/v2\/users\/10909"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jinfiniti.com\/blog\/wp-json\/wp\/v2\/comments?post=48187"}],"version-history":[{"count":0,"href":"https:\/\/www.jinfiniti.com\/blog\/wp-json\/wp\/v2\/posts\/48187\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jinfiniti.com\/blog\/wp-json\/wp\/v2\/media\/48189"}],"wp:attachment":[{"href":"https:\/\/www.jinfiniti.com\/blog\/wp-json\/wp\/v2\/media?parent=48187"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jinfiniti.com\/blog\/wp-json\/wp\/v2\/categories?post=48187"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jinfiniti.com\/blog\/wp-json\/wp\/v2\/tags?post=48187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}