Test Code LAB22 Carbamazepine, Free and Total, Serum
Additional Codes
CARFT
46828
Useful For
Monitoring carbamazepine (free and total) therapy in patients who are uremic
Profile Information
Test ID | Reporting Name | Available Separately | Always Performed |
---|---|---|---|
CARTA | Carbamazepine, Tot, S | Yes | Yes |
CARF | Carbamazepine, Free, S | Yes | Yes |
Method Name
CARF: Ultrafiltration Followed by Homogeneous Microparticle Agglutination Immunoassay
CARTA: Homogeneous Microparticle Agglutination Immunoassay
Reporting Name
Carbamazepine, Free and Total, SSpecimen Type
Serum RedSpecimen Required
Container/Tube: Red top (serum gel/SST are not acceptable)
Submission Container/Tube: Plastic vial
Specimen Volume: 2 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial within 2 hours of collection.
Specimen Minimum Volume
1 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum Red | Refrigerated (preferred) | 7 days | |
Frozen | 28 days | ||
Ambient | 48 hours |
Reference Values
CARBAMAZEPINE, TOTAL
Therapeutic: 4.0-12.0 mcg/mL
Critical value: ≥15.0 mcg/mL
CARBAMAZEPINE, FREE
Therapeutic: 1.0-3.0 mcg/mL
Critical value: ≥4.0 mcg/mL
Day(s) Performed
Monday through Sunday
Report Available
Same day/1 dayPerforming Laboratory
Mayo Clinic Laboratories in RochesterTest Classification
This test has been modified from the manufacturer's instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
80156
80157
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
CARFT | Carbamazepine, Free and Total, S | 34545-4 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
CARF | Carbamazepine, Free, S | 3433-0 |
CARTA | Carbamazepine, Tot, S | 3432-2 |
Forms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.