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HelpTest ID CDP Chlordiazepoxide and Metabolites, Serum
Useful For
Monitoring chlordiazepoxide therapy
Assessing toxicity
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
Serum RedShipping Instructions
Ship specimen in amber vial to protect from light.
Specimen Required
Supplies: Amber Frosted Tube, 5 mL (T915)
Collection Container/Tube: Red top (serum get/SST are not acceptable)
Submission Container/Tube: Amber vial
Specimen Volume: 1 mL
Collection Instructions: Within 2 hours of collection, centrifuge and aliquot serum into an amber vial.
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum Red | Refrigerated (preferred) | 28 days | LIGHT PROTECTED |
| Ambient | 28 days | LIGHT PROTECTED | |
| Frozen | 28 days | LIGHT PROTECTED |
Reference Values
Therapeutic concentration:
Chlordiazepoxide: 400-3,000 ng/mL
Cutoff concentrations by liquid chromatography tandem mass spectrometry:
Chlordiazepoxide: 10 ng/mL
Nordiazepam: 10 ng/mL
Oxazepam: 10 ng/mL
Day(s) Performed
Wednesday
CPT Code Information
80299
Report Available
2 to 7 daysReject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Forms
If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:
-Neurology Specialty Testing Client Test Request (T732)
-Therapeutics Test Request (T831)