Pathology | Eastern Health

Test & Collection Guide

PLEASE NOTE: Recent changes have been made to this Test

Recent changes for Clozapine
Date	Field	Changed From	Changed To
28th July 2026	Alternative names	Clozaril	Clozaril, norclozapine
	Preferred Specimen Type	Plasma	Serum
	Preferred Container Type	EDTA Adult	Plain tube no gel
	External Laboratory	Austin Pathology	Monash Pathology
	Frequency	Mon-Fri	Twice weekly
	Method	If norclozapine is requested, do not send clozapine to the Austin. Send the sample to the Alfred for clozapine and norclozapine testing.
9th September 2025	Preferred Container Type	Lithium heparin no gel	EDTA Adult

Clozapine

Ordering information:

Includes norclozapine level

Alternate names:

Clozaril, norclozapine

Laboratory:

Referred Test

Test Code:

CLOZ

Specimen types:

Serum

Container types:

Plain tube no gel

Collection Instructions:

Transport specimen at Room Temperature to lab
Sample haemolysis may make this test unreportable

Collection time prior to next dose (trough/Pre-dose ).

Minimum Adult Volume:

2 mL

Frequency:

Twice weekly

Result Turnaround Time:

7 days

Reference Interval:

350-600 ug/L Therapeutic

Laboratory Use Only

Storage Instructions:

The sample is to be spun and aliquoted prior to transportation.

External Laboratory:

Monash Pathology

External Laboratory details...

Test & Collection Guide

PLEASE NOTE: Recent changes have been made to this Test

Recent changes for Clozapine

Date

Field

Changed From

Changed To

Alternative names

Preferred Specimen Type

Preferred Container Type

External Laboratory

Frequency

Method