CPT® Code 80321

The CPT® Code 80321 refers to a laboratory test specifically designed to measure alcohol biomarkers in various biological samples, including serum, plasma, urine, saliva, or hair. This test is crucial for detecting the presence of alcohol exposure or ingestion, which can indicate current drinking habits or recent episodes of relapse or binge drinking. The biomarkers assessed in this test include carbohydrate-deficient transferrin (CDT), fatty acid ethyl esters (FAEE), ethyl sulfate (EtS), ethyl glucuronide (EtG), and phosphatidylethanol (PEth). Each of these biomarkers serves a unique purpose in evaluating alcohol consumption patterns. For instance, CDT is particularly useful as a marker for chronic alcoholism, as it reflects changes in the glycosylation pattern of transferrin that occur with prolonged alcohol use. Notably, the levels of CDT can return to normal within a few weeks following alcohol abstinence. FAEE levels can help distinguish between chronic alcohol abuse and binge drinking, while EtS and EtG are often tested together to enhance the sensitivity of detecting recent alcohol consumption. PEth, on the other hand, is indicative of binge or prolonged drinking and is less sensitive to incidental alcohol exposure. The testing methodologies employed for these biomarkers include advanced techniques such as gas chromatography/mass spectrometry and high-performance liquid chromatography-tandem mass spectrometry, ensuring accurate and reliable results.