Laboratory Medicine

Test Directory / Clozapine

Clozapine

EDTA

Test	Clozapine
Common Abbreviations	CLOZ
Profile	NA
Tube type	EDTA
Clinical Indication	Clozapine is an atypical antipsychotic used to treat schizophrenia resistant to conventional therapy. Plasma clozapine concentrations of 0.35mg/L and above have been associated with a good response, with the risk of convulsions increasing above 1.0mg/L.
Specimen Type	Blood
Sample type	EDTA whole blood
Minimum Volume	2mL
Special Precautions	Pre-dose or trough sample
Stability	Contact Referral Laboratory
Turnaround Time	2 days
Laboratory	Viapath King's College Hospital London SE5 9RS 0203 299 5881
Reference Interval	Contact Referral Laboratory
Limitations	Contact Referral Laboratory
Notes

Update for visitors

Visiting restrictions are in place at our hospitals to stop the spread of norovirus. These restrictions will be in place until further notice.

The following wards are closed to visitors:

York Hospital: Ward 29 and Ward 37.

There are four exceptions only to the restrictions. These are:

For patients who are receiving end of life care

Paediatric patients (babies and children)

Maternity care

The family carers of those with dementia

We understand these restrictions can be difficult when a loved one is unwell. The restrictions will be reviewed daily and lifted as soon as it is safe. Thank you for your understanding as we try to reduce the spread of norovirus in our hospitals.