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Intracellular NAD® Test (CLIA-Certified)

From the pioneer and market leader in NAD testing.

NAD levels drop as you age, affecting energy and cellular function. Our clinical-grade at-home test measures your current levels and provides personalized dosage recommendations. Know exactly where your levels stand and if NAD+ supplementation is right for you.


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Description

Your NAD levels are unique to you. Generic supplement dosing ignores this reality.

This CLIA-certified test measures your actual intracellular NAD levels from a small blood sample. You’ll receive specific dosage recommendations based on your results, not marketing claims.

Perfect for anyone taking NAD+ supplements, experiencing fatigue, or interested in longevity optimization. The test eliminates trial and error, helping you supplement smarter.

Stop guessing. Start testing. Get the personalized data your health deserves.

Why Test Your NAD Levels?
  • NAD powers over 500 cellular processes including energy production, DNA repair, and brain function. NAD levels decline with age, especially after 30.
  • Most people guess at NAD+ supplement dosages. The same amount could be perfect for one person but ineffective or excessive for another.
  • Testing reveals your exact levels before you start supplementing. You’ll know if your current routine is working or if you need adjustments.
  • Without testing, you’re flying blind with your health optimization.
How It Works

No lab visits required. No guesswork involved. Just clear data to guide your NAD+ supplementation strategy.

Step 1

Order your test kit online. We ship it directly to your door.

Step 2

Collect a small blood sample using the included finger-prick device. Mail it back in the prepaid envelope.

Step 3

Receive your results in 3-7 business days with personalized NAD+ dosage recommendations.

Total Satisfaction Guarantee

We stand behind our test with a guarantee. Experience confident, data-driven results or your money back.

CLIA-Certified Accuracy

We developed the first clinical-grade NAD+ test in 2019. Today, we process over 90% of all NAD+ tests worldwide.

Our CLIA-certified lab in Augusta, Georgia meets the highest medical testing standards. The same quality your doctor would use.

Thousands of customers have used their results to optimize their energy, recovery, and longevity protocols. Many retest periodically to track their progress.

Join the growing community of people taking control of their cellular health with real data.

Intracellular NAD® Test (CLIA-Certified)

From the pioneer and market leader in NAD testing.

NAD levels drop as you age, affecting energy and cellular function. Our clinical-grade at-home test measures your current levels and provides personalized dosage recommendations. Know exactly where your levels stand and if NAD+ supplementation is right for you.


Free Shipping above $200
Not sure what to choose?

Find all our supplements and tests on our shop page. You may also use our Ai-based chat to get more answers.

Intracellular NAD® Test (CLIA-Certified)

What is NAD and why is it important to measure?

NAD keeps your cells running smoothly. It’s involved in DNA repair, energy production, and fighting inflammation.

Your body uses NAD for more than 500 cellular activities every day. These include making ATP (cellular energy), supporting your immune system, and regulating sleep.

As NAD declines with age, you may notice lower energy, slower recovery, and reduced mental clarity. Many age-related health concerns trace back to insufficient NAD.

Testing reveals your current levels so you can take action. You can’t optimize what you don’t measure.

When NAD levels are optimal, your cells repair themselves better and produce energy more efficiently.

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How the Intracellular NAD® Test works

Get lab-quality NAD testing from your kitchen table. The Intracellular NAD® Test delivers precise results through an easy at-home process. No appointments or lab visits required.

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Register your at-home test kit
Use the unique ID number included with your test kit to register at jinfiniti.com.
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Collect your sample
Use the finger-prick device to collect blood spots. Mail it back using the prepaid envelope.
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Get your results online
Get your personalized report and dosage recommendations in 3-7 days through our secure portal.
Your icNAD result from the current test
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What’s in your digital results
High reproducibility, personalized insights, and actionable guidance with Jinfiniti empower you to optimize NAD levels.
Reproducible
With an average CV of 3.1%, the Jinfiniti Intracellular NAD® assay is highly reproducible.
Meaningful

We translate complex data into clear, easy-to-understand insights. No medical degree required.

Personalized

View a personalized report based on your NAD test results and detailed information about what your results mean for you.

Actionable
Optimize your health! Use your report to improve NAD levels and join Dr. Jin-Xiong She’s webinar to learn more and ask questions.
Effortless and convenient finger-prick sample collection
  • Warm your fingers with hot water.
  • Press the lancet device firmly into your fingertip.
  • Gently squeeze your finger to form a large blood drop.
  • Keep your hand below heart level to help blood flow.
  • Let the blood card dry for 3 hours or overnight.
  • Don’t apply fixing buffer to wet blood spots.
  • Use express shipping from overseas.
  • Send blood cards back to Jinfiniti even if you have activation issues.
Optimize your NAD levels with the right approach
Your test results are just the starting point. Multiple proven strategies can help boost your cellular NAD.
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NAD precursors
Various NAD precursors help cells produce NAD. Nicotinamide riboside (NR), a two-step precursor, efficiently boosts NAD levels, while one-step precursor Nicotinamide Mononucleotide (NMN) is the most effective supplement. Vitamin B3 compounds like nicotinic acid (NA) and nicotinamide (NAM) are generally less effective for most people.
NAD+ or NADH
NAD+ and NADH are forms of NAD used via IV, subcutaneous, and oral routes to boost NAD levels and treat health conditions. Our studies show IV NAD+ doesn’t raise levels, subcutaneous injections provide modest increases, and many oral supplements lack efficacy data.
Inhibit enzymes that consume NAD
NAD is broken down by enzymes like CD38, Sirtuins, and PARP. CD38, which rises with inflammation and aging, is a major NAD degrader. Supplements like quercetin and apigenin can inhibit CD38 activity in test tubes. While CD38 inhibition may boost circulating NAD levels, its effect on intracellular NAD remains unclear.
Boost enzymes that make NAD
NAMPT is a key enzyme for NAD production in our cells. Supplements, diet, sleep, and exercise can influence NAD-synthesizing enzymes and NAD levels, but alone, they may not be enough. A combination of NAD precursors and a healthy lifestyle is the best approach to optimize NAD levels.
Why should you take the Intracellular NAD® test?
For years, people wanted to test their NAD levels but couldn’t find a reliable option. Jinfiniti developed the first clinical-grade NAD test in 2019. Today, we process over 90% of all NAD tests worldwide.
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First clinically approved NAD Test
We pioneered NAD testing with unmatched accuracy. Our CLIA-certified lab delivers the same quality your doctor would use.
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Research-backed protocols
Our protocols come from real clinical research and practical experience. You get personalized guidance that actually works.
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Proven expertise in NAD Optimization®
We’ve spent years perfecting NAD optimization strategies. Our expertise helps you avoid trial and error with your health.
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Real-world results
Your results guide specific changes to your routine. Many customers see noticeable improvements in energy, sleep, and recovery within weeks.
Backed by 40 years of research and innovation
10,000+
Publications on NAD+
Over 10,000 scientific papers published on the topic of NAD+ and millions take NAD supplements daily.
2000+
Studies on NAD+ Precursors
Supplement ingredients are classified as FDA “generally recognized as safe” with proven health benefits.
1000+
Clinical Trials
Backed by 1000+ clinical trials and thousands of doctors, health experts, and supplement leaders.
10+
Leading Scientists
Formulated by a world-class scientist for his own use and endorsed by our scientific board of health leaders.

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60 day money back guarantee

If you are not happy with the product for any reason, we will be glad to refund your purchase. Tests are not refundable.

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cGMP Certified
Our supplements are produced at a GMP-certified manufacturing facility, ensuring quality, safety and consistency.
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Vitality↑® NAD+ Booster
Patent-pending formulation guaranteed to optimize NAD.
  • Scientifically optimized formula backed by multiple clinical studies
  • Elevate energy and accelerate recovery
  • Embrace healthy aging and overall wellness
  • Sharpen mental clarity and balance sleep
  • Build cellular defense and repair
  • 5+ years of validated safety and effectiveness
  • Third-party tested for quality and purity
See what our customers are saying
Discover how our customers have transformed their health and longevity with Jinfiniti’s advanced solutions!

Frequently Asked Questions

Have questions about NAD testing? Find answers about how the test works, what your results mean, and next steps. We’ve covered the most common concerns customers have before ordering.
How accurate is the test?
Our CLIA-certified lab delivers clinical-grade accuracy with a coefficient of variation of 3.1%. The same quality standards your doctor would use.
How long do results take?
You’ll receive your digital report in 3-7 business days after we receive your sample.
Is the finger prick painful?
Most people describe it as a quick pinch. The lancet is designed for minimal discomfort.
What if I can’t draw enough blood?
Send your sample anyway. Our lab can process most samples, even with smaller blood spots.
How often should I test?
We recommend testing before starting supplementation, then retesting after 6-8 weeks to track progress.
What’s included in my results?
Your NAD level, personalized dosage recommendations, and explanations of what your numbers mean. Plus access to Dr. Jin-Xiong She’s webinars.
Can I take this test if I’m on medications?
Yes, most medications don’t interfere with NAD testing. Contact us if you have specific concerns.
Do I need to fast before testing?
No fasting required. Collect your sample at any time of day.

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