Code 86381 describes a test to detect a mitochondrial antibody, such as M2, in a specimen such as serum. The typical lab method for this test is enzyme immunoassay (EIA). The presence of the certain mitochondrial antibodies, especially M2, aids in diagnosis of primary biliary cholangitis (PBC), also called primary biliary cirrhosis, which is an autoimmune disease characterized by bile–duct damage leading to liver damage.
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