TMAO (Trimethylamine N-oxide)
TMAO is produced when gut bacteria metabolize choline, carnitine, and phosphatidylcholine from red meat, eggs, and dairy into TMA, which the liver oxidizes to TMAO. Elevated levels are independently associated with heart attack, stroke, and mortality, and may promote platelet reactivity and foam cell formation. Diet and gut microbiome changes can lower TMAO.
1 providers include this
Lipid Panel / Cardiovascular Health
<6.2 μM optimal
What is TMAO (Trimethylamine N-oxide)?
TMAO is produced when gut bacteria metabolize choline, carnitine, and phosphatidylcholine from red meat, eggs, and dairy into TMA, which the liver oxidizes to TMAO. Elevated levels are independently associated with heart attack, stroke, and mortality, and may promote platelet reactivity and foam cell formation. Diet and gut microbiome changes can lower TMAO.
Why It Matters
Produced by gut bacteria from red meat and eggs. High levels strongly predict heart attack, stroke, and death. Modifiable through diet and gut health optimization.
Which Providers Test TMAO (Trimethylamine N-oxide)?
Full Provider Comparison
| Provider | Includes | Annual Cost | Biomarkers |
|---|---|---|---|
 Superpower | — | $199 | 100+ (150 with ratios) |
 WHOOP Advanced Labs | — | $349 | 65 |
 Labcorp OnDemand | — | $398 | 40+ |
| — | $486 | 40+ | |
| — | $449 | 288 | |
| — | $349 | 100+ | |
| — | $829 | 54 | |
 Function Health | — | $365 | 160+ |
| — | $250 | 65 | |
| — | $495 | 80+ | |
| — | $895 | 100+ | |
| ✓ | $1950 | 130+ | |
| — | $375 | 95+ | |
| — | $Varies | 75+ | |
| — | $190 | 100+ | |
| — | $99 | 50 | |
| — | $124 | 60 | |
| — | $349 | 130+ | |
| — | $349 | 80+ | |
| — | $375 | 85 | |
| — | $700 | 128 | |
| — | $99 | 100+ |
Frequently Asked Questions
What is TMAO (Trimethylamine N-oxide)?
TMAO is produced when gut bacteria metabolize choline, carnitine, and phosphatidylcholine from red meat, eggs, and dairy into TMA, which the liver oxidizes to TMAO. Elevated levels are independently associated with heart attack, stroke, and mortality, and may promote platelet reactivity and foam cell formation. Diet and gut microbiome changes can lower TMAO.
What is the optimal range for TMAO (Trimethylamine N-oxide)?
The standard reference range for TMAO (Trimethylamine N-oxide) is <6.2 μM optimal. Optimal ranges may differ based on individual health goals and expert recommendations.
Which blood test providers include TMAO (Trimethylamine N-oxide)?
1 out of 22 blood testing providers include TMAO (Trimethylamine N-oxide) in their panels. This biomarker has limited availability.
What category does TMAO (Trimethylamine N-oxide) fall under?
TMAO (Trimethylamine N-oxide) is categorized under Lipid Panel / Cardiovascular Health. This category includes biomarkers that help assess related aspects of health and wellness.
Want to improve your lipid markers? Zone 2 cardio and other interventions on YouBoost are rated by evidence strength. Track your recovery with HRV Zone.
Medical Disclaimer
This information is for educational purposes only and is not medical advice. Always consult with a qualified healthcare provider about your specific health needs.
Last reviewed:2026-04-12