Test Overview
Test Methodology
Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Test Usage
Useful for monitoring compliance and assessing toxicity in overdose situations.
Reference Range *
ADULT: Therapeutic: 30 - 300 ng/mL; Toxic: > 600 ng/mL.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Wednesday, Saturday
Analytic Time
3 days
Soft Order Code
SO
Synonyms
- Thorazine
Laboratory
Sendout
Reference Laboratory
Warde CHLPR (ARUP 0090870)
Section
Special Testing
Specimen Requirements
Collection Instructions
Collect blood in a red top tube; do not use SST tube. Centrifuge, aliquot serum into plastic vial within 2 hours of collection, and refrigerate.
Alternate Specimen
Lavender top (EDTA), Sodium heparin (green top), potassium oxalate(gray top) or sodium fluoride are acceptable anticoagulants.
Normal Volume
2 mL serum
Minimum Volume
1 mL serum
Storage Temperature
Frozen preferred, refrigerated acceptable
Rejection Criteria
SST tube not acceptable.
Additional Information
Test sent to Warde Medical Laboratory; performed by ARUP Laboratories.
Billing
CPT Code
80342
Fee Code
20460
LOINC
3471-0
NY State Approved
No