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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: 2.5 mL

 

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

Processing Instructions

Reject due to:  hemolysis. EDTA plasma is unacceptable. SST, Pearl Top, Green Top

Spin: Y

Aliquot: Y

Temp: 2 - 4 C

Storage location: 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

Department

Department:  

Harborview Medical Center

Room GWH47; 523 9th Ave
Seattle, WA 98104
 

Phone Number: (206) 744-3451

 

 

Reference Range

 

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

 

Methodology

Method: Membrane Separation/Immunoassay, Immunoassay

Analytical Volume: None specified

Limitations:

Special Instructions

Links to:

Consent Forms

Algorithms

Requisition

Req

Send Out Instructions

 

Reference Test Name: Carbamazepine, Free & Total
Reference Test Number: RFTCBAM
Instructions: Send out Mon - Fri with the UW/HMC courier. Use a yellow UW/HMC Toxicology request form. Keep the last copy for our lab records.

 

CPT Code

80156

80157