Gamma-Hydroxybutyric Acid Screen, Serum/Plasma

Test Code

37654

CPT Codes
80307

Includes

If the screen is positive, Gamma-Hydroxybutyric Acid confirmation, Serum/Plasma testing will be added automatically at no additional charge.

Preferred Specimen

5 mL serum collected in a red-top tube (no gel)

Minimum Volume

2.4 mL

Other Acceptable Specimens

Plasma collected in an EDTA (lavender-top), or (pink-top) tube

Instructions

Promptly centrifuge and separate serum or plasma into a plastic, screw-capped vial, using approved guidelines.

Transport Container

Plastic screw-cap vial

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 30 days
Refrigerated: 30 days
Frozen: 60 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Sodium citrate (light blue-top) tubes • Polymer gel separation tube (SST or PST) • ACD acid citrate dextrose (yellow-top) tube

Methodology
Gas Chromatography/Mass Spectrometry (GC/MS)

FDA Status
This test was developed and its performance characteristics determined by NMS Labs. It has not been cleared or approved by the US Food and Drug Administration.

Setup Schedule

Set up: As needed; Report available: 4 days (after set up)

Reference Range

See Laboratory Report

Clinical Significance

Forensic Analysis; Exclusion Screen

Performing Laboratory
National Medical Services
200 Welsh Rd,
Horsham, PA 19044

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.