Home
HelpTest Code CDP Chlordiazepoxide and Metabolite, Serum
Test Down Notes
Effective December 14, 2023: This test is temporarily unavailable due to analytic issues. The downtime is expected to be >30 days. Order ZW86, (1080SP) as an alternate. See test notification here.
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
Chlordiazepoxide and metabolite, SSpecimen 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
Submission Container/Tube: Amber vial
Specimen Volume: 0.5 mL
Collection Instructions: Centrifuge and aliquot serum into amber vial within 2 hours of collection.
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum Red | Refrigerated (preferred) | 14 days | LIGHT PROTECTED |
| Frozen | 14 days | LIGHT PROTECTED | |
| Ambient | 24 hours | LIGHT PROTECTED |
Specimen Minimum Volume
0.3 mL
Day(s) Performed
Monday, Wednesday
Specimen Retention Time
14 daysReport Available
2 to 7 daysReference Values
Therapeutic concentration:
Chlordiazepoxide: 400-3,000 ng/mL
Nordiazepam: 100-500 ng/mL
Useful For
Monitoring chlordiazepoxide therapy
Assessing toxicity
CPT Code Information
80299
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CDP | Chlordiazepoxide and metabolite, S | 33060-5 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 8610 | Chlordiazepoxide | 3457-9 |
| 37321 | Nordiazepam | 3537-8 |
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)