CARBAMAZEPINE, FREE

Test Documentation
Specimen Required
Draw blood in a plain red-top tube. Centrifuge, separate and send 1.0 mL serum (0.5 mL minimum) refrigerated in a screw-capped plastic vial.

Rejection Criteria
SST Tube

Methodology
High Performance Liquid Chromatography

Stability
Room Temperature: 24 hours; Refrigerated: 14 days; Frozen: 14 days

Reference Range
Therapeutic: 0.9–3.8 µg/mL
Toxic: 4.0 µg/mL

Performed
Monday-Friday

Turnaround Time1-3 days
Test CodeCARBF
CPT-4 Code (s)
80157
LOINC Codes
3433-0

Warde
Medical
Laboratory