CPT® Code 80349

The CPT® Code 80349 refers to a laboratory test specifically designed to measure natural cannabinoids present in biological samples such as meconium stool, urine, serum, or plasma. Cannabinoids are chemical compounds that occur naturally in the marijuana plant, known scientifically as Cannabis sativa. Among these compounds, tetrahydrocannabinol (THC) is the most notable due to its psychoactive properties, which significantly influence the brain's limbic system. This area of the brain is crucial for functions related to memory, cognition, and psychomotor performance, as well as the mesolimbic pathways that are involved in the perception of reward and pain. THC is characterized by its fat solubility and has a long elimination half-life, meaning it can remain detectable in the body for extended periods. Specifically, cannabinoids can be identified in urine for several weeks following exposure, while they may be present in serum or plasma for up to 12 hours. The collection of samples for this test involves obtaining a blood sample through venipuncture, acquiring a urine sample via random void or catheterization, and collecting meconium stool from a diaper. The testing process utilizes quantitative liquid chromatography-tandem mass spectrometry to accurately detect THC and its metabolite, 9-carboxy-THC, providing essential information regarding cannabinoid exposure.