Specimen:
Collect
- One Lavender (EDTA)
Also Acceptable:
- One Green Top (Li Heparin)
- One Green Top (Na Heparin)
- One Pink Top (EDTA)
Submit
- 5 mL (Min:3 mL) Whole blood . Submit Refrigerated.
Special Handling
- Transport 5mL whole blood in the original collection tube. (Min 3mL)
Rejection Criteria
- Frozen whole blood
- Hemolyzed specimens
- Gel separator tubes.
Specimens collected in sodium fluoride/potassium oxalate (gray).
Room temperature specimens.
Stability
Ambient: 3 Hour(s); Refrigerated: 6 Day(s); Frozen: Unacceptable; Incubated: Unacceptable
Methodology
- Enzymatic
- Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Performed
Sun-Sat
Reported
4-6 Day(s)
CPT Codes
- 84433
Components
- 92101 - TPMT ACTIVITY
Last Updated: April 26, 2026 @ 9:13 am
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