Test Details
Methodology
Presumptive testing by immunoassay (IA) at a testing threshold of 5 ng/mL. Presumptive positives are not confirmed by a definitive method.
Result Turnaround Time
3 - 5 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 presumptive presence of tetrahydrocannabinol (THC)
Specimen Requirements
Specimen
Whole blood
Volume
7 mL
Minimum Volume
3 mL
Container
Lavender-top (EDTA) tube, gray-top (sodium fluoride) tube, or green-top (heparin) 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 |
|---|---|---|---|---|---|---|
| 791544 | THC Screen ONLY, WB | 761546 | THC (Marijuana) Metabolite | 42492-9 | ||
| 791544 | THC Screen ONLY, WB | 790956 | Specimen Type | 31208-2 | ||
| Order Code | 791544 | |||||
| Order Code Name | THC Screen ONLY, WB | |||||
| Order Loinc | ||||||
| Result Code | 761546 | |||||
| Result Code Name | THC (Marijuana) Metabolite | |||||
| UofM | ||||||
| Result LOINC | 42492-9 | |||||
| Order Code | 791544 | |||||
| Order Code Name | THC Screen ONLY, WB | |||||
| Order Loinc | ||||||
| Result Code | 790956 | |||||
| Result Code Name | Specimen Type | |||||
| UofM | ||||||
| Result LOINC | 31208-2 |