Sample type: Whole Blood

Test name: Thiopurine methyl transferase a.k.a. TPMT

Condition / Indication: Pre-azathiaprine

Special precautions & notes: None.

Reference range: Deficient <10 pmol/h/mg Hb; Carrier 10-25 pmol/h/mg Hb; Normal 26-50 pmol/h/mg Hb; High >50 pmol/h/mg Hb

Container: EDTA (Lavender top)

Ideal volume (mL): 4 mL

Referred outside NBT for analysis? Yes

Discipline: Clinical Biochemistry

Turnaround time: 14 days

Referral location: Purine Research Laboratory, St Thomas' Hospital, Synnovis, North Wing - 4th Floor, Westminster Bridge Road, London, SE1 7EH