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For hours, walk-ins and appointments.Tetrahydrocannabinol (THC), Screen With Reflex Confirmation, Serum
CPT:
80307
Test Includes
THC (marijuana) metabolite
Special Instructions
If reflex test is performed, additional charges/CPT code(s) will apply.
Expected Turnaround Time
3 - 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.
Related Documents
Specimen Requirements
Specimen
Serum
Volume
7 mL
Minimum Volume
3 mL
Container
Red-top (no additive) tube; tubes with separator gels should not be used.
Collection
Serum should be separated from cells within two hours of venipuncture. Submit serum in plastic transport tube.
Storage Instructions
Room temperature. For storage beyond 3 days, specimen should be refrigerated or frozen.
Test Details
Use
Detect the presence of tetrahydrocannabinol (marijuana constituent).
Methodology
Initial presumptive testing by immunoassay at the following testing threshold: tetrahydrocannabinol (THC), 5.0 ng/ml. Presumptive positives confirmed to limit of quantitation by definitive chromatography mass spectrometry (GC/MS or LC/MS-MS).
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 700834 | THC, Scr w/Conf, SE | 700719 | THC(MARIJUANA) METABOLITE, IA | ng/mL | 8172-9 |
| Reflex Table for THC(MARIJUANA) METABOLITE, IA | ||||||
|---|---|---|---|---|---|---|
| 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 Table for THC(MARIJUANA) METABOLITE, IA | ||||||
|---|---|---|---|---|---|---|
| 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 Table for THC(MARIJUANA) METABOLITE, IA | ||||||
|---|---|---|---|---|---|---|
| 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 Table for THC(MARIJUANA) METABOLITE, IA | ||||||
|---|---|---|---|---|---|---|
| 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 Table for THC(MARIJUANA) METABOLITE, IA | ||||||
|---|---|---|---|---|---|---|
| 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 |
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The LOINC® codes are copyright © 1994-2021, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf