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Intracellular NAD® Test (CLIA-Certified)

From the pioneer and market leader in NAD testing.
FAQs

Nicotinamide adenine dinucleotide (NAD) affects cellular energy production and over 500 cellular functions. Its levels drop rapidly as you age or your health deteriorates. Our clinical-grade at-home test accurately measures your levels and helps you find the best NAD products and personalized dosage recommendations.

  • NAD can provide incredible health benefits ranging from more energy, improved mental clarity, better sleep among many health benefits
  • The benefits can only be realized if NAD levels are optimized
  • Testing before and after supplementation is the only way to find out whether your chosen product optimizes your NAD
  • This was the first, and is still the only reliable, NAD test on the market
  • Clinically validated by CLIA standard
  • Recommended by over 2,000 doctors and health professionals
  • Trusted by 100,000 customers
  • Performed in our own CLIA-certified lab

Test to optimize your NAD level, don’t guess!

Free Shipping above $200
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. No guesswork. Just clear, actionable data to guide your NAD⁺ supplementation strategy.

Step 1: Order Your Kit

Purchase your test kit online—we’ll ship it directly to your door. Ideally you want to purchase 2 kits, 1 for before supplementation, the second test for after taking a product for 3-4 weeks. You can joing our NAD Optimization program to save 82% for testing and 25% for supplements

Step 2: Collect & Mail Your Sample

Use the included finger-prick device to collect a small blood sample. Then, return it in the prepaid envelope (U.S. only).
For faster processing, we recommend using FedEx Express for return shipping.

Step 3: Get Your Results

Once we receive your sample, you’ll get your results within 2-7 business days.
Discover your true NAD⁺ levels and whether:

  • You need NAD⁺ supplements

  • Your current supplements are working

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.

Vitality ↑® NAD+ Booster Powder
Vitality ↑® NAD+ Booster Powder
from $118.00
Patent-pending formulation guaranteed to optimize NAD.

Intracellular NAD® Test (CLIA-Certified)

From the pioneer and market leader in NAD testing.
Write a review
FAQs

Nicotinamide adenine dinucleotide (NAD) affects cellular energy production and over 500 cellular functions. Its levels drop rapidly as you age or your health deteriorates. Our clinical-grade at-home test accurately measures your levels and helps you find the best NAD products and personalized dosage recommendations.

  • NAD can provide incredible health benefits ranging from more energy, improved mental clarity, better sleep among many health benefits
  • The benefits can only be realized if NAD levels are optimized
  • Testing before and after supplementation is the only way to find out whether your chosen product optimizes your NAD
  • This was the first, and is still the only reliable, NAD test on the market
  • Clinically validated by CLIA standard
  • Recommended by over 2,000 doctors and health professionals
  • Trusted by 100,000 customers
  • Performed in our own CLIA-certified lab

Test to optimize your NAD level, don’t guess!

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)
Add To Cart
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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.

illustration register kit 61a8ffa5
Register your at-home test kit
Use the unique ID number included with your test kit to register at jinfiniti.com.
seniors eating healthy food
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
illustration icnad result
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.
Watch Video
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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ORAL NMN Supplements
The best way to raise NAD+ levels is oral supplements conatining Nicotinamide Mononucleotide (NMN), the most potent NAD+ precursors that cells use to produce NAD+. Our patented Vitality NAD+ Booster is by far the most effective product to optimize NAD+ levels and revitalize cellular function.
IV Infusion or Subcutaneous Injection
IV infusion of NAD+ can temporarily increase NAD+ levels in the plasma (the liquid portion of the blood) but is degraded after 24 hours. NAD+ is too big to get inside the cells and therefore cannot increase NAD+ levels inside the cells. It is not the right method for optimizing cellular health. Subcutaneous NAD+ injection has limited effecacy unless it is injected at high dose and every day. Test your levels to make sure that you are getting adequate dosages.
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 is neglegible.
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, their impact on NAD+ levels is minimum and insufficient. A combination of NAD precursors like NMN and a healthy lifestyle is the best approach to optimize NAD levels.
More than 90% of customers report positive results

Customers are getting incredible benefits with Jinfiniti’s Vitality NAD+ Booster in as little as 5 days.

Testimonial by Amy Rahill
Amy Rahill
Founder, Aluma Wellness
Testimonial by Suzanne Von Schaack
Suzanne Von Schaack
Film Producer, Actress, Modeling Coach
Testimonial by Anthony Lolli
Anthony Lolli
President, Lolli Brands Entertainment
Testimonial by Stephen McCain
Stephen McCain
Gymnast, Olympian & Hall of Fame Inductee
Testimonial by Sena Agbeko
Sena Agbeko
Former WBC USA Super Middleweight Champion
Testimonial by Dr. Steve Hoody
Dr. Steve Hoody
CEO, NOVO The Medical Weight Loss Experts
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.
Read Reviews
icon first place
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.
icon insight
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
Shop Now
See what our customers are saying
Discover how our customers have transformed their health and longevity with Jinfiniti’s advanced solutions!
Customer Reviews
4.9 Based on 31 Reviews
5 ★
94% 
29
4 ★
6% 
2
3 ★
0% 
0
2 ★
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Customer Photos
Intracellular NAD® Test - Customer Photo From Jeeti
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Filter Reviews:
RB
18 January 2026
Richard B.
US US

NAD tedt

Easy to do, report easy to read.

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AN
21 December 2025
Aleksandar N.
US US

Testing kit

Very easy to use and follow the basic instructions provided. I’ve so far tested twice once to get base number before any NAD boosting treatment and once after 6 weeks of NR **** supplements, right after a 500ml IV of NR. The numbers track what is expected. I will test again at start of 2026 to see expected drop off of the IV boosted numbers. Then 2026 will be year of JInfinity **** treatments for the whole 12 months

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Was this helpful?  0    2
AG
20 December 2025
Alon G.
US US

Works for me

I am definitely less sleepy and more alert in the afternoon since I began using this. Requiring less coffee. The effect became noticeable after 2-3 weeks of use and has persisted for the two months that I’ve been using it.

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Was this helpful?  0    4
SO
15 November 2025
Sonny O.
US US

Second Test

Tests are easy to administer and results return fairly quickly.

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Was this helpful?  3    2

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.