Why NAD+ Blood Testing Matters - And How to Use It Wisely

At ānjīn, we believe in responsible, informed supplementation. That’s why we’re proud to offer access to one of the first-ever blood tests for NAD+ and NADH.

NAD+ (nicotinamide adenine dinucleotide) is a coenzyme essential for cellular energy, mitochondrial function, and healthy aging. Its reduced form, NADH, plays a crucial role in energy production. The balance between NAD+ and NADH is called the redox ratio, it can give insight into oxidative stress and how your cells are functioning. 

Until recently, NAD+ testing was largely limited to research labs. Now, for the first time, individuals can get a direct measurement of NAD+ and NADH levels from a simple blood test. This is a powerful step toward personalized health, but it comes with important caveats.

How to Interpret Your NAD+ Test Results
Blood tests typically provide reference ranges, but it’s crucial to understand how these are determined. Most clinical labs use a 95% population reference range. That means your results are considered “normal” if they fall within the values seen in 95% of the general population. But that doesn’t always mean optimal, as each person has unique physiology and some people have naturally lower or higher levels of NAD+.

What Low NAD+ Might Mean
Very low NAD+ levels should be attended to by a doctor without delay. Sometimes seen in chronic fatigue, metabolic disorders, certain neurodegenerative diseases, it may indicate deeper mitochondrial dysfunction or severe niacin (vitamin B3) deficiency. But more subtle imbalances, such as a skewed NAD+/NADH ratio, may still have long-term impacts.

Testing = Empowerment
If you're taking NMN or NAD+ precursors, or considering starting, testing gives you a data-driven baseline to track impact over time. We believe responsible supplementation starts with knowing where you are in the journey.

Want to supplement smarter? Start with the science. Start with testing.

Check out our supplement range and sign up for early access to NAD+ testing when it becomes available.