CPT® Code 83497

The CPT® Code 83497 refers to a laboratory test that measures the levels of 5-hydroxyindolacetic acid (5-HIAA) in urine. 5-HIAA is a significant metabolite of serotonin, which is a monoamine neurotransmitter synthesized from the amino acid tryptophan. This test is particularly important in the clinical setting as elevated levels of 5-HIAA can indicate various medical conditions. Specifically, it is often associated with neuroendocrine tumors, particularly those originating in the small intestine, as well as kidney disease or dysfunction. Additionally, conditions such as small bowel resection and autism spectrum disorders may also lead to increased levels of this metabolite. It is crucial to note that certain medications and dietary factors can influence the results of the 5-HIAA test. Drugs that affect serotonin levels, as well as foods that are high in serotonin, should be avoided for a period of 72 hours prior to and during the collection of the urine sample to ensure accurate test results. The urine sample can be collected as a random voided specimen or as a 24-hour collection, and the analysis is typically performed using quantitative high-performance liquid chromatography, a precise method for measuring chemical compounds in biological samples.