Test Overview
Test Methodology

Gas Chromatography (GC)

Test Usage

Monitor compliance; assess toxicity.

Reference Range *

Thioridazine: Steady-state serum concentration during chronic oral administration of 400 mg daily: 140 - 2600 ng/mL. Therapeutic steady-state concentrations may overlap levels associated with toxicity; Mesoridazine: 100 - 1400 ng/mL.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Tuesday, Thursday
Analytic Time

5 - 8 days

Soft Order Code
SO
Synonyms
  • Mellaril
  • Mesoridazine
  • THIORIDAZINE (MELLARIL)
  • MESORID
  • THIORID
  • THIORIDAZINE
Laboratory
Sendout
Reference Laboratory
Warde THIR (NMS 4461SP)
Section
Special Testing
Specimen Requirements
Collection Instructions

Collect blood in a red top tube; do not use SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.

Rejection Criteria
SST tube not acceptable.
Yellow Top Tube
Red Top Tube
Normal Volume
2.0 mL serum
Minimum Volume
0.7 mL serum
Additional Information

Test sent to Warde Medical Laboratory; performed by NMS Labs.

Billing
CPT Code
80342
Fee Code
22109
LOINC
Z223-8
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