|Mnemonic: ||[TPMT RBC]|
|Name: ||Thiopurine Methyltransferase (TPMT), RBC|
|Specimen: ||5 mL EDTA Lavender top tube. Send whole blood sample in the original collection container.|
Alternative sample requirement: Lavender (EDTA), pink (K2EDTA), or green (sodium or lithium heparin) WITHOUT gel.
Do NOT freeze the sample. Do NOT use gel tubes.
|Minimum Spec: ||3 mL|
|Transport Temp: ||Refrigerated|
|Spec Stability: ||Stable 6 days refrigerated.|
|Ref Lab/Code: ||ARUP 0092066|
| Method: ||Enzymatic/High Performance Liquid Chromatography|
|Note: ||This is the preferred screening test to detect individuals at high risk for myelosuppression when exposed to standard dose of thiopurines. INTENDED FOR PRETHERAPEUTIC EVALUATION ONLY.|