TPMT Enzyme TPMTENZ

Synonyms
Allscripts (AEHR) Order Name	TPMT Enzyme
Sunrise Clinical Manager (SCM) Order Name	Thiopurine Methyltransferase (TPMT) Enzy
EPIC Order Name	Thiopurine Methyltransferase (TPMT) Enzyme Activity
Clinical Info	Determination of TPMT levels that may be associated with toxicity of anticancer and anti-inflammatory drugs
Specimen Type	Blood
Specimen Volume	8 mL Whole Blood adults
Container	Lavender Top Tube
Collection Instructions	Container/ Tube: 2 Lavender top (EDTA Specimen: 8 mL Whole Blood adults 5 mL Whole Blood pediatric Minimum: 5 mL Whole Blood Transport Temperature: Refrigerated whole blood (Stable 14 days)
Transport Instructions	Refrigerated whole blood (Stable 14 days)
Specimen Stability
Methodology	Enzymatic endpoint/liquid chromatography/tandem mass spectrometry (LC/MS-MS).
Days Performed
Performing Laboratories	LabCorp of America
CPT	82657 Loinc Code: 21563-2
PDM	5906029 , 5906029
Result Interpretation • Normal: 15.1−26.4 units/mL RBC • Heterozygous for low TPMT variant: 6.3−15.0 units/mL RBC • Homozygous for low TPMT variant: <6.3 units/mL RBC
Forms

Synonyms