Phenotypic test that provides a quantitative measurement of TPMT enzyme activity levels to assist physicians with azathioprine (Imuran) or 6-MP (Purinethol) dosing strategies. Individuals with low thiopurine methyltransferase are at risk of excessive myelosuppression.
Normal TPMT Activity: >21.0 EU/mL; Intermediate TPMT Activity: 6.0-21.0 EU/mL; Low TPMT Activity: <6.0 EU/mL.
5 - 8 days
- Thiopurine Methyltransferase (TPMT), Phenotype
- TPMT Enzyme
- TPMT Phenotype
- Thiopurine Methyltransferase (TPMT), Erythrocytes, Enzyme Activity
Collect specimen in a lavender top tube. Refrigerate and send intact specimen within 5 days of collection. Do not freeze.
Test sent to Prometheus Labs.