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Test ID FMARI Cannabinoid Analysis, Whole Blood

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
FMARX THC, MS, WB/SP Rfx No No

Testing Algorithm

If the Cannabinoid Analysis, Whole Blood is positive, then the THC, GC/MS Confirmation (FMARX) will be performed at an additional charge.

Method Name

Immunoassay (IA) - Screen

Gas Chromatography/Mass Spectrometry (GC/MS) - Confirmation, if applicable

Reporting Name

THC, Scr w/Conf, WB

Specimen Type

Whole blood


Specimen Required


Draw blood in a purple-top (EDTA), green-top (sodium-heparin) or grey-top (NaF/oxalate) tube(s). Send 7 mL of whole blood refrigerated in a plastic vial.


Specimen Minimum Volume

3 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Whole blood Refrigerated (preferred) 14 days
  Frozen  180 days
  Ambient  72 hours

Reference Values

Cannabinoid Screen:

THC (MARIJUANA) Metabolite- Negative;  Cutoff: 5 ng/mL

Cannabinoid Confirmation:

Tetrahydrocannabinol (THC)

Carboxy-THC

Hydroxy-THC

Cannabidiol

Confirmation threshold: 1.0 ng/mL

Day(s) Performed

Monday through Sunday

Report Available

7 to 9 days

Performing Laboratory

Medtox Laboratories, Inc.

Test Classification

This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.

CPT Code Information

80307

80349- if applicable

G0480 (if applicable)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FMARI THC, Scr w/Conf, WB 42491-1

 

Result ID Test Result Name Result LOINC Value
Z4819 THC (Marijuana) Metabolite 42491-1

NY State Approved

Yes