Gamma-Hydroxybutyric Acid Screen, Serum/Plasma

Test Code

GHB

Quest 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 (CPT code(s): 82542)

Preferred Specimen

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

Minimum Volume

0.5 mL

Other Acceptable Specimens

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

Instructions

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

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

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

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

Sodium citrate (light blue-top) tube • ACD (yellow-top) tube • Serum separator tube (SST) • Polymer gel separation tube (PST)

Methodology
Gas Chromatography/Mass Spectrometry (GC/MS)

Setup Schedule

Set up: Daily; Report available: 4-8 days (If Positive: 6-13 days)

Reference Range

See Laboratory Report

Clinical Significance

Forensic analysis; Exclusion screen

Performing Laboratory
NMS Labs
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.