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Carbamazepine
MessageTest performed at York Hospital Laboratory.
Test Code
CRBM
Alias/See Also
Tegretol, Carbatrol, Epitol, Equetro
CPT Codes
80156
Preferred Specimen
0.2 mL serum collected in a serum separator tube (SST)
Other Acceptable Specimens
0.2 mL serum collected in a no additive (red-top) tube, transferred to a plastic screw-cap vial
0.2 mL plasma collected in a lithium heparin (green-top) gel separator tube
0.2 mL plasma collected in a lithium heparin (green-top) gel separator tube
Instructions
Specimens should be drawn just before the next dose for trough values.
If toxicity is suspected, specimens may be drawn at any time.
If toxicity is suspected, specimens may be drawn at any time.
Transport Temperature
Refrigerated
Specimen Stability
Room temperature: 5 days
Refrigerated: 5 days
Frozen: 6 months
Refrigerated: 5 days
Frozen: 6 months
Methodology
Immunoassay
Setup Schedule
Daily
Report Available
Next Day
Available STAT 2 Hours
Available STAT 2 Hours
Reference Range
4.0-10.0 ug/mL
Detection Limit: 3.0 ug/mL
Critical Values
>12.0 ug/mL
Detection Limit: 3.0 ug/mL
Critical Values
>12.0 ug/mL
Clinical Significance
Carbamazepine is a commonly prescribed anti-convulsant used mainly in the treatment of seizure disorders. Carbamazepine measurements are used to monitor patient compliance and therapy, and to diagnosis potential overdose.
