THIO METHYL
Thiopurine Methyltransferase (TPMT)
EPIC Test Procedure Code: LAB3616
Synonyms:
Thiopurine Methyltransferase Phenotype,
Azathioprine Phenotype
TPMT Phenotype
Performing Lab:
Referral Laboratory
Container Type:
Green top (sodium heparin) tube or lavender top (EDTA) tube
Specimen Type:
Whole blood
Preferred Volume:
8 mL
Minimum Volume:
5 mL
Store and Transport:
Refrigerated
Stability:
Frozen - unstable
Refrigerated - 14 days
Unacceptable Condition:
Specimens that are frozen, grossly hemolyzed, or clotted will be rejected.
CPT Codes:
84433 - Thiopurine S- Methyltransferase TpMT (EAP 30021381)
Method:
Enzymatic endpoint/liquid chromatography (LC/MS-MS)
Reference Ranges:
Please refer to the performing lab report for applicable reference ranges