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HelpTest Code CARTA Carbamazepine, Total, Serum
Useful For
Monitoring therapy
Determining compliance
Assessing toxicity
Reporting Name
Carbamazepine, Tot, SSpecimen Type
Serum RedOrdering Guidance
This test measures carbamazepine only. For assessment of its active metabolite, carbamazepine-10,11-epoxide, which is the predominant form in children, order CARBG / Carbamazepine-10,11-Epoxide, Serum)
Specimen Required
Collection Container/Tube: Red top
Specimen Volume: 0.5 mL
Submission Container/Tube: Plastic vial
Collection Instructions: Centrifuge and aliquot serum into a plastic vial within 2 hours of collection.
Specimen Minimum Volume
0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum Red | Refrigerated (preferred) | 7 days | |
| Frozen | 28 days | ||
| Ambient | 48 hours |
Reject Due To
| Gross hemolysis | Reject |
Reference Values
Therapeutic: 4.0-12.0 mcg/mL
Critical value: ≥15.0 mcg/mL
Day(s) Performed
Monday through Sunday
Report Available
Same day/1 daySpecimen Retention Time
7 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
80156
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CARTA | Carbamazepine, Tot, S | 3432-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| CARTA | Carbamazepine, Tot, S | 3432-2 |
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)