Gamma-Hydroxybutyric Acid

Sunquest Code:GHB  
Epic Code:LAB3499Epic Name:Gamma OH Butyrate
Methodology:Liquid chromatography with tandem mass spectrometry; Gas chromatography/mass spectrophotometry
Turnaround Time:Specimens are sent to reference laboratory Mon-Fri; results are reported within 5 days.

Collection Instructions

Optimal Volume:10 mL
Minimum\Peds Volume:2.6 mL
Container:Red (no gel) (Green (lithium heparin, no gel), Green (sodium heparin, no gel))

Processing and Shipping

Specimen Processing:Aliquot 5 mL, 1.2 mL minimum. Store at room temperature.
Shipping Instructions:Ship at room temperature.
Stability:Up to 3 days at room temperature. For longer storage, refrigerate or freeze.
Test Performed at or Referral Lab Lab Sendouts  (MedTox)
Referral Lab number:18250


Reference Range:


The clinical effects of gamma-hydroxybutyric acid have been associated with the following concentrations:


51 ug/mL or less

Light sleep

52-156 ug/mL

Moderate sleep

156-260 ug/mL

Deep sleep

261 ug/mL or greater



Click HERE to Report test errors or omissions.
*If no email program is associated with this computer, please contact: for TestID: 3682"