6MP Metabolites, 6TG Metabolites, Mercaptopurine Metabolites, Azathioprine Metabolites
16 days
Whole blood washing and red blood cell harvesting/counting. Liquid chromatography/tandem mass spectrometry (LC/MS-MS) after acidic hydrolysis
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Monitors 6-MP/azathioprine therapy. Assesses efficacy and toxicity.
Whole Blood
3 mL
Lavender-top (EDTA) tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.
| Temperature | Period |
|---|---|
| Refrigerated | 8 days |