CPT® Code 86677

The CPT® Code 86677 refers to a laboratory test specifically designed to measure antibodies against Helicobacter pylori (H. pylori). H. pylori is a type of bacterium that can be found in contaminated food and water and has the potential to spread from person to person. This organism is known to cause chronic inflammation of the gastrointestinal mucosa, particularly affecting the stomach and duodenum, which can lead to the development of erosions or ulcers in these areas. The test measures the seroconversion of immunoglobulin A (IgA) and immunoglobulin G (IgG) antibodies, which typically occurs within approximately 60 days following exposure to the bacterium. Elevated levels of both IgA and IgG antibodies, especially when accompanied by gastrointestinal symptoms, may indicate an active H. pylori infection. It is important to note that while the antibody test can provide valuable information, it should be confirmed through additional diagnostic methods such as bacterial isolation, H. pylori breath tests, or fecal antigen tests using enzyme immunoassay (EIA). Although testing for IgM antibodies is also possible, the clinical significance of this measurement remains uncertain. The test requires a blood sample, which is obtained through a venipuncture that is reported separately. The serum is then analyzed for IgA and IgG antibodies using a semi-quantitative enzyme immunoassay, while IgM antibodies are assessed using a semi-quantitative enzyme-linked immunosorbent assay (ELISA).