Gamma-Hydroxybutyric Acid, Serum
Test Mnemonic
GHBSER
CPT Codes
- 80307 - QTY (1)
- G0480 - QTY (1)
Aliases
- GHB, Serum
Performing Laboratory
Mayo Clinic Dpt of Lab Med & Pathology
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 5 mL | Serum | No additive (Red) | Refrigerated | Do not use serum separator tubes. |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 5 mL | Plasma | Sodium heparin (Green) | Refrigerated | Do not use plasma separator tubes. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1.2 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 72 hours |
| Refrigerated | 7 days |
| Frozen | 180 days |
Days Performed
Sun - Sat
Turnaround Time
6 - 10 days
Methodology
| Name | Description |
|---|---|
| Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) |
Reference Range
Special Info
Do not use gel tubes.
Clinical Info
Reporting limit: 5.0 ug/mL. If the GHB Screen S/P is non-negative, then the Gamma-Hydroxybutyric Acid, CF, SP (FGHA) will be performed at an additional charge.