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Blood Sciences

Blood Test Information

TPMT (Thio Purine Methyl Transferase)
(a.k.a Azothioprine sensitivity)
minimum sample volume required ~ 4ml

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Tube type: EDTA

Special instructions
Reference ranges... Deficient: <10 Low: 20-67 Normal: 68-150 High: >150
Sent away to Birmingham City Hospital

Reference range
See above


Turnaround Time
21 days

Department: Biochemistry

Clinical Application
Identification of patients with low TPMT enzyme levels, which can lead to a risk of toxicity to thiopurine drugs.


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