Test Details
Methodology
Initial presumptive testing by immunoassay at a testing threshold of 5 ng/mL; presumptive positives confirmed to limit of quantitation by definitive chromatography mass spectrometry (GC/MS) or LC/MS-MS).
Result Turnaround Time
4 - 10 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.
Limitations
This test was developed, and its performance characteristics determined, by LabCorp. It has not been cleared or approved by the US Food and Drug Administration (FDA).
Specimen Requirements
Specimen
Whole blood
Volume
7 mL
Minimum Volume
3 mL
Container
Gray-top (sodium flouride/sodium 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 |
|---|---|---|---|---|---|---|
| 700881 | THC, Scr w/Conf, WB | 700929 | THC (MARIJUANA) MTB,IA | ng/mL | 42491-1 | |
| Order Code | 700881 | |||||
| Order Code Name | THC, Scr w/Conf, WB | |||||
| Order Loinc | ||||||
| Result Code | 700929 | |||||
| Result Code Name | THC (MARIJUANA) MTB,IA | |||||
| UofM | ng/mL | |||||
| Result LOINC | 42491-1 |
| Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
|---|---|---|---|---|---|---|
| Reflex 1 | 700817 | THC,MS,WB/SP RFX | 700911 | Cannabinoid Confirmation | 48943-5 | |
| Reflex 1 | ||||||
| Order Code | 700817 | |||||
| Order Name | THC,MS,WB/SP RFX | |||||
| Result Code | 700911 | |||||
| Result Name | Cannabinoid Confirmation | |||||
| UofM | ||||||
| Result LOINC | 48943-5 | |||||
| Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
|---|---|---|---|---|---|---|
| Reflex 1 | 700817 | THC,MS,WB/SP RFX | 700774 | Tetrahydrocannabinol(THC) | ng/mL | 73935-9 |
| Reflex 1 | ||||||
| Order Code | 700817 | |||||
| Order Name | THC,MS,WB/SP RFX | |||||
| Result Code | 700774 | |||||
| Result Name | Tetrahydrocannabinol(THC) | |||||
| UofM | ng/mL | |||||
| Result LOINC | 73935-9 | |||||
| Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
|---|---|---|---|---|---|---|
| Reflex 1 | 700817 | THC,MS,WB/SP RFX | 700775 | Carboxy-THC | ng/mL | 48944-3 |
| Reflex 1 | ||||||
| Order Code | 700817 | |||||
| Order Name | THC,MS,WB/SP RFX | |||||
| Result Code | 700775 | |||||
| Result Name | Carboxy-THC | |||||
| UofM | ng/mL | |||||
| Result LOINC | 48944-3 | |||||
| Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
|---|---|---|---|---|---|---|
| Reflex 1 | 700817 | THC,MS,WB/SP RFX | 700829 | Hydroxy-THC | ng/mL | 48934-4 |
| Reflex 1 | ||||||
| Order Code | 700817 | |||||
| Order Name | THC,MS,WB/SP RFX | |||||
| Result Code | 700829 | |||||
| Result Name | Hydroxy-THC | |||||
| UofM | ng/mL | |||||
| Result LOINC | 48934-4 | |||||
| Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
|---|---|---|---|---|---|---|
| Reflex 1 | 700817 | THC,MS,WB/SP RFX | 700923 | Cannabidiol | ng/mL | 82964-8 |
| Reflex 1 | ||||||
| Order Code | 700817 | |||||
| Order Name | THC,MS,WB/SP RFX | |||||
| Result Code | 700923 | |||||
| Result Name | Cannabidiol | |||||
| UofM | ng/mL | |||||
| Result LOINC | 82964-8 | |||||