Vanderbilt Pathology Laboratory Services
Test Directory
CARBAMAZEPINE BLOOD (CBM)
Department: ToxicologyTest Synonym(s): Tegretol, CBM
CPT Codes: 80156
Methodology: FPIA
Reference Range: Therapeutic range: 4 - 12 mcg/mL
Tube Type: Dark green top (Sodium Heparin)
Specimen: Blood
Alternate Specimen: Red top (no gel)
Pediatric Requirements: 1 dark green microtainer
Volume: 5 mL blood
Minimum Volume: 0.5 mL serum or plasma
Temperature: Refrigerated if not delivered immediately
Stability: Refrigerated (2-8° C): 2 days; frozen (-20° C) for longer storage
Reasons for Rejection: Hemolysis, improper collection
Days Performed: Daily
Times Performed: Continuous
TAT: Stat: 1 hour, Routine: 2 hours
Special Instructions: Draw immediately before next dose - refrigerate if not delivered immediately.
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