Methodology
Liquid Chromatography/ Tandem Mass Spectrometry (LC/MS/MS)
Synonyms
6-Methylmercaptopurine (6-MMP); 6-MP; 6-Thioguanine (6-TG); AZA
Specimen Type
Whole Blood
Performing Lab
Quest Diagnostics Valencia
Epic ID
LAB05975
Lab Test Days
Tuesday-Saturday
Standard TAT
2-4 Days
Collection Information
Specimen Required
2.5-5 mL Whole Blood
Container Type
Lavender (EDTA)
Collection Instructions
A trough specimen is required (within 1 hour prior to the next dose).
Processing Information - Lab Use Only
Transport Temperature
Refrigerate-Only
Specimen Stability
Room Temp=24 Hours; Refrigerated=5 Days; Frozen=Unacceptable
Rejection Criteria
Heparin whole blood; Received frozen; Hemolysis
Test Volume Required
5 mL Whole Blood
Minimum Test Volume
2.5 mL Whole Blood
Included Tests
6-Thioguanine (6-TG) and 6-Methylmercaptopurine (6-MMP).
CPT Codes
80299
Revised
05-01-20
Initials
SL