Does NMN Increase NAD+ Levels in the UK? Real Blood Test Results (2026)
One of the most searched questions in the UK right now is simple:
Does NMN increase NAD+ levels?
Instead of theory, here are real NAD+ blood test results from a 38-year-old male after consistent NMN supplementation.
Real NAD+ Blood Test Result (UK)
Age: 38
NAD+ Result: 58.8 μmol/L
Testing method: Enzymatic cycling assay
Location: UK private laboratory

What Is the Normal NAD+ Level by Age?
According to the laboratory reference range for men aged 21–40:
- 18.7 – 20.5 μmol/L
A result of 58.8 μmol/L is approximately 3 times higher than the upper end of the average range for this age group.
This places the result significantly above the typical NAD+ levels seen in men in their late 30s.
So, Does NMN Increase NAD+ Levels?
NMN (nicotinamide mononucleotide) is a direct precursor to NAD+.
When consumed, NMN converts into NAD+ inside the body, supporting natural production pathways.
This blood test result suggests that consistent NMN supplementation can significantly elevate measurable NAD+ levels compared to standard age averages.
Importantly, blood testing provides objective data rather than relying on subjective feelings of energy or wellbeing.
Why NAD+ Levels Matter
NAD+ is essential for:
- Cellular energy production (ATP)
- Mitochondrial efficiency
- DNA repair processes
- Metabolic health
- Healthy ageing pathways
NAD+ naturally declines with age, which is why many people in the UK are exploring NMN supplementation.
What Influences NAD+ Levels?
While NMN plays a key role, NAD+ levels can also be influenced by:
- Sleep quality
- Diet
- Exercise
- Stress levels
- Overall metabolic health
Blood testing remains the most accurate way to measure your personal levels.
Does All NMN Work the Same?
The effectiveness of NMN depends heavily on purity and consistency.
Low-grade NMN may degrade or contain significantly less active compound than advertised.
That is why third-party batch testing and published certificates are critical.
👉 View third-party NMN lab testing
The Bottom Line
Based on this UK blood test result:
Yes, NMN supplementation can increase measurable NAD+ levels.
At age 38, a level of 58.8 μmol/L sits far above the average reference range for men aged 21–40.
In 2026, the most reliable way to answer “Does NMN increase NAD+?” is simple:
Test. Measure. Compare.