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

Methodology

Liquid Chromatography/Tandem Mass Spectometry (LC/MS/MS)
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Reference Range

6-TG: 235 - 400 pmol/8 x 10 (8) RBC
6-MMP: <5700 pmol/8 x 10 (8) RBC
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Performing Laboratory

Quest
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New York DOH Approval Status

No
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