Test Details
Mnemonic
CLOZA
Ordering Code
1757000
CPT-4 Code(s)
80159
Specimen Information
Collect
Red top
Specimen Preparation
Centrifuge, separate serum from cells and send 1.0 mL serum refrigerated in a screw capped plastic vial.
Minimum Volume
0.5 mL
Transport Temperature
Refrigerated
Rejection Criteria
Serum separator tube (SST), Heparinized samples
Stability
Room temperature: 48 hours
Refrigerated: 7 days
Frozen: 14 days
Refrigerated: 7 days
Frozen: 14 days
Methodology
High Performance Liquid Chromatography/Tandem Mass Spectrometry
Reference Range
Clozapine: 200 - 700 ng/mL
Clozapine toxic level: >1000 ng/mL
Norclozapine: 200 - 700 ng/mL
Clozapine toxic level: >1000 ng/mL
Norclozapine: 200 - 700 ng/mL
Performing Laboratory
Warde Medical Laboratory
New York DOH Approval Status
No