Carbamazepine, Unbound (Free), Serum or Plasma
CPT:
80157
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80157 |
Synonyms
- CBZ; Tegretol®; Carbatrol®; Epitol®
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Expected Turnaround Time
3 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Related Documents
Specimen Requirements
Specimen
Serum or plasma
Volume
3 mL
Minimum Volume
1 mL
Container
Red-top (no additive) tube or green-top (heparin) tube
Collection
Transfer separated serum or plasma to a plastic transport tube.
Storage Instructions
Submission/transport (<3 days): Room temperature. For storage beyond three days, specimen should be refrigerated or frozen.
Stability Requirements
| Temperature | Period |
|---|---|
| Room temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 14 days |
| Freeze/thaw cycles | Stable x3 |
Causes for Rejection
Gel-barrier tube
Test Details
Use
This test is used for therapeutic drug management.
Methodology
Ultrafiltration; Immunoassay (IA)
Reference Interval
0.6–4.2 µg/mL
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