Carbamazepine, Unbound (Free), Serum or Plasma

TEST: 702906
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CPT: To be determined. Updates will be made when available.
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Synonyms

  • CBZ; Epoxide; Tegretol®; Carbatrol®; Epitol®

Expected Turnaround Time

3 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Specimen Requirements

Specimen

Serum or plasma

Volume

3 mL

Minimum Volume

1 mL

Container

Red-top (no additive) tube or green-top (heparin) tube

Collection

Transfer separated serum or plasma to a plastic transport tube.

Storage Instructions

Submission/transport (<3 days): Room temperature. For storage beyond three days, specimen should be refrigerated or frozen.

Stability Requirements

Temperature

Period

Room temperature

14 days

Refrigerated

14 days

Frozen

14 days

Freeze/thaw cycles

Stable x3

Causes for Rejection

Gel-barrier tube

Test Details

Use

This test is used for therapeutic drug management.

Methodology

Ultrafiltration; Immunoassay (IA)

Reference Interval

0.6–4.2 µg/mL

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