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Carbamazepine, Free & Total

Important Note

Test includes both free and total carbamazepine levels. Total carbamazepine will not be performed at CHRMC unless requested.

If total carbamazepine concentration is below the limit of detection (0.5 ug/mL), the free carbamazepine will not be done.

Clinical System Name

Miscellaneous Test

Synonyms

Tegretol, Free & Total

Sample Requirements

Specimen: Whole Blood

Container(s): Red

Preferred Vol: 6.0 mL

Minimum Vol: 2.0 mL

 

Note: Method is affected by hemolysis. EDTA plasma is unacceptable.

Processing Instructions

Reject due to: Hemolysis. EDTA plasma, Gold/SST, Dark Green/Sodium Heparin, Lt. Green/Lithium Heparin

Spin: Y

Aliquot: Y

Temp: 2 - 4 C

Storage location: Send Outs rack in the CPA refrigerator.

 

Off-site collection:

Stability

Specimen Type Temperature Time
Serum Room temp  
  Refrigerated 24 h
  Frozen  

 

Availability

STAT Performed TAT
N Daily 1 - 3 d

 

Performing Laboratory

Harborview Medical Center

325 9th Ave, Room GWH47

Seattle, WA 98104

 

Phone Number: (206) 744-3451

Department

Department: Send Outs

Phone Number: (206) 987-2563

Methodology

Method: Membrane Separation/Immunoassay, Immunoassay

Analytical Volume: None specified

Limitations:

Reference Range

Free Carbamazepine 1.0 - 3.0 ug/mL
Total Carbamazepine 6 - 12 uG/mL
Free/Total Ratio 8 - 35%

 

Send Out Instructions

Reference Test Name: Carbamazepine, Free and Total
Reference Test Number: RFTCBM
Instructions: Send out Monday through Friday with the UW courier.

 

CPT Code

80156, 80157