ARUP's Laboratory Test Directory

TPMT Genotype : 2002573

Mnemonic: TPMT GENO

Ordering Recommendation: Aids in detecting individuals at high risk for myelosuppression when exposed to standard dose of thiopurines.
Methodology: Qualitative Polymerase Chain Reaction
Performed: Varies
Reported: 3-5 days
Specimen Required: Collect: Lavender (EDTA).

Specimen Preparation: Transport 5 mL whole blood. (Min: 2 mL)

Storage/Transport Temperature: Refrigerated. Also acceptable: Room temperature

Stability (collection to initiation of testing): Ambient: 8 days; Refrigerated: 1 month; Frozen: Unacceptable
Reference Interval:
By report
CPT Code(s): 81401
Cross References: Myelotoxicity (TPMT Genotype), S-adenosyl-L-methionine (TPMT Genotype), Thiopurine S-methyltransferase (TPMT Genotype), TPMT Biochemical Assay (TPMT Genotype), TPMT Genetics (TPMT Genotype)