- TMAO
TMAO (Trimethylamine N-oxide)
Specimen:
Test Code
TMAO
Specimen Name
TMAO (Trimethylamine N-oxide)
Collect
1-Plain Red Top Also acceptable EDTA
Submit
1 mL (Min: 0.5 mL) Serum or Plasma
Special Handling
For specimens collected in plain red-top tube, hold tube upright at room temperature for 45 minutes and allow to clot. Centrifuge specimen after clotting according to manufacturer's specifications. Transfer to a transport tube for storage at (2°C to 8°C) until shipped. Plasma must be separated from cells within 45 minutes of venipuncture. Send plasma in a plastic transfer tube.
Rejection Criteria
Serum specimen drawn in gel-barrier collection tube other than the NMR LipoTube; sample older than 14 days
Stability
Preferred/Transport Refrigerated 14 days; Ambient 14 days; Frozen 14 days
Methodology
Nuclear magnetic resonance (NMR)
Performed
—
Reported
4-7 days
CPT Codes
- 84999
Components
—
Additional Information
TMAO levels are lower in humans who follow a vegetarian or vegan diet than in omnivores. Because TMA and TMAO are naturally abundant in some fish, patients should fast overnight and refrain from consuming fish and other marine food items the day before the blood draw. Fasting for 10 to 12 hours is recommended.
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Common Lab Definitions
- Serum
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