Test Catalog

Test

Code
L819
Name
THIOPURINE METHYLTRANSFERASE RBC
Description
Also known as: THIOPURINE, TPMT TMPT ENZYME TMPT-RBC, TPMT ERYTHOCYTESS, TPMT, L819
Orderable Code: L819
Test Contains (LOINC): Thiopurine Methyltransferase (53819-9)
SPECIMEN REQUIREMENTS
Sample Type:Whole Blood
Preferred Container:EDTA (Lavender Top) Tube, Sodium Heparin (Green Top) Tube or Lithium Heparin (Green Top) Tube
Sample Volume:5.0 mL
Minimal Sample Volume:3.0 mL
Handling Instructions
Transport 5 mL whole blood.
Client Transport Temperature: Refrigerated
Specimen Stability: Ambient: 3 hours; Refrigerated: 6 days; Frozen: Unacceptable
Unsuitable Specimen: Gel separator tubes. Specimens collected in sodium fluoride/potassium oxalate (gray). Hemolyzed, frozen, or room temperature specimens.
TESTING
Frequency: Monday, Wednesday, Friday
Expected Turn Around: 4 – 6 Days
Responsible Dept: Reference Lab
Referral Lab: ARUP
Referral Lab Code: 0092066
CPT: 84433
Methodology:Enzymatic/Quantitative Liquid Chromatography-Tandem Mass Spectrometry
ADDITIONAL INFORMATION
Notes: This assay measures only enzyme activity.
Billing Status: Pre-Pay/Client Billed Only