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Category Biochemistry
Test background

Clozapine (brand name Clozaril) is an atypical antipsychotic drug used to treat schizophrenia resistant to conventional antipsychotics. Clozapine is generally restricted due to its potential to induce acute agranulocytosis.

Clinical Indications

Therapeutic drug monitoring of all patients registered with the Clozaril Patient Monitoring Service.

Reference range

See report

Sample & container required EDTA (lavender top) preferred, SST (gold top) or serum (red top) accepted
Sample volume 1 mL pre-dose trough sample
Turnaround time Up to 6 weeks

Requesting restricted to mental health team only.
Not currently performed in house; this is a referred test.