Gamma-Hydroxybutyric Acid  Screen, Serum/Plasma

Test Code
GHB


Quest Code
37654


Alias/See Also
9326SP, 37654


CPT Codes
80307

Includes
If positive, TC 36084 Gamma-Hydroxybutyric Acid Confirmation, Serum/Plasma will be added at an additional charge (CPT code: 80368)


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), EDTA (pink-top) or sodium heparin (green-top) tube


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


Transport Temperature
Refrigerated


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 days (after set-up)


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.