Methodology
Polymerase Chain Reaction (PCR)
Synonyms
TPMT Genetics; Mercaptopurine Toxicity; Azathiopurine Toxicity; TPMT Deficiency
Specimen Type
Whole Blood
Performing Lab
Quest Diagnostics San Juan Capistrano
Epic ID
LAB07726
Lab Test Days
Wednesday and Friday
Standard TAT
5-6 Days
Collection Information
Specimen Required
3-5 mL Whole Blood
Container Type
Lavender (EDTA)
Collection Instructions
Whole blood collected in an EDTA (royal blue-top), sodium heparin (green-top), ACD Solution A/B (yellow-top) or lithium heparin (green-top) tube is also acceptable.
Processing Information - Lab Use Only
Transport Temperature
Refrigerate-OK/Ambient-OK
Specimen Stability
Room Temp=8 Days; Refrigearated=8 Days; Frozen=Unacceptable
Test Volume Required
5 mL Whole Blood
Minimum Test Volume
3 mL Whole Blood
Comments
Insurance authorization is required prior to draw for Outpatients. Ok to send on Inpatients. No special forms needed.
CPT Codes
81335
Revised
01-17-20
Initials
SL