CPT® Code 80356

The CPT® Code 80356 refers to a laboratory test specifically designed to measure the presence of the heroin metabolite known as 6-monoacetylmorphine (6-MAM) in biological specimens such as urine, serum, or plasma. Heroin, chemically known as diacetylmorphine, is classified as a synthetic opioid derived from morphine. It is important to note that heroin itself is not an active chemical; rather, it is rapidly metabolized by the body into 6-MAM within a very short time frame, typically under six minutes. This metabolite is then filtered by the kidneys and excreted through urine. The detection window for identifying 6-MAM in urine is notably brief, lasting less than 24 hours post-consumption. Additionally, any residual 6-MAM that remains in the body is converted into morphine in a matter of under 40 minutes. The testing process involves obtaining a blood sample through a separately reportable venipuncture, while urine specimens can be collected via random void or catheterization. For serum and plasma samples, quantitative liquid chromatography-tandem mass spectrometry is employed for testing, whereas urine samples are initially screened using a qualitative enzyme immunoassay, with positive results subsequently confirmed through quantitative high-performance chromatography-tandem mass spectrometry.