Test Details
Mnemonic
TPMTM
Ordering Code
3400000
CPT-4 Code(s)
80299
Specimen Information
Patient Preparation
A trough specimen is required (collected within 1 hour prior to the next dose).
Collect
Lavender EDTA
Specimen Preparation
Send 5.0 mL whole blood.
Minimum Volume
2.5 mL
Transport Temperature
Refrigerated
Rejection Criteria
Hemolysis, frozen samples, heparin whole blood
Stability
Room temperature: 24 hours
Refrigerated: 7 days
Frozen: Unacceptable
Refrigerated: 7 days
Frozen: Unacceptable
Methodology
Liquid Chromatography/Tandem Mass Spectometry (LC/MS/MS)
Reference Range
6-TG: 235 - 400 pmol/8 x 10 (8) RBC
6-MMP: <5700 pmol/8 x 10 (8) RBC
6-MMP: <5700 pmol/8 x 10 (8) RBC
Performing Laboratory
Quest Valencia
New York DOH Approval Status
Yes