Test Details
Methodology
Initial presumptive testing by chromatography/tandem mass spectrometry (LC/MS-MS) at a testing threshold of 10.0 µg/mL; presumptive positives confirmed by definitive chromatography/mass spectrometry (GC/MS) at a testing threshold of 10.0 µg/mL
Result Turnaround Time
7 - 14 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Use
Detect use of gamma-hydroxybutyric acid (GHB), a psychoactive drug
Specimen Requirements
Specimen
Whole blood
Volume
5 mL
Minimum Volume
1.2 mL
Container
Gray-top (NaF/oxalate) tube, green-top (heparin) tube, or lavender-top (EDTA) tube
Storage Instructions
Submission/transport (<3 days): Room temperature. For storage beyond three days, specimen should be refrigerated or frozen.
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 738802 | GHB Screen, WB | 77733-4 | 738803 | GHB | 77733-4 | |
| Order Code | 738802 | |||||
| Order Code Name | GHB Screen, WB | |||||
| Order Loinc | 77733-4 | |||||
| Result Code | 738803 | |||||
| Result Code Name | GHB | |||||
| UofM | ||||||
| Result LOINC | 77733-4 |
| Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
|---|---|---|---|---|---|---|
| Reflex 1 | 738804 | GHB, CF, WB | 738798 | GHB Confirmation | 81629-8 | |
| Reflex 1 | ||||||
| Order Code | 738804 | |||||
| Order Name | GHB, CF, WB | |||||
| Result Code | 738798 | |||||
| Result Name | GHB Confirmation | |||||
| UofM | ||||||
| Result LOINC | 81629-8 | |||||
| Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
|---|---|---|---|---|---|---|
| Reflex 1 | 738804 | GHB, CF, WB | 738805 | GHB | ug/mL | 28038-8 |
| Reflex 1 | ||||||
| Order Code | 738804 | |||||
| Order Name | GHB, CF, WB | |||||
| Result Code | 738805 | |||||
| Result Name | GHB | |||||
| UofM | ug/mL | |||||
| Result LOINC | 28038-8 | |||||