Thiopurine Methyltransferase (TPMT) Genotype for Drug Metabolism

Performed: 
Monday - Friday
Reported: 
Within 10 business days
Use: 
Detection of polymorphisms within the TPMT gene associated TPMT deficiency.
Specimen Requirements: 

Collect at least 3 mL of blood in a lavender-top tube (EDTA).

Specimen Preparation: Transport 3 mL of whole blood. (Minimum: 1 mL)

Storage/Transport Temperature: Refrigerated

Stability (collection to initiation of testing):
  • Ambient: 72 hours
  • Refrigerated: 1 week
  • Frozen: Unacceptable
Reference Values: 
No allelic variants detected (*1/*1)
Interpretation Data: 

Analytical Interpretation: The report includes the patient's diplotype of TPMT genes and is reported using star alleles as follows:

CPT Code (s): 
81401
Notes: 

UFHPL Test #: 10155

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