Code 86015 describes a test to identify an antibody to actin (smooth muscle) (ASMA) in a specimen such as serum. A typical lab method for this test is an immunoassay, such as enzyme–linked immunosorbent assay (ELISA). Clinicians may order ASMA to help with diagnosis of autoimmune hepatitis (AIH), which is a disease characterized by chronic liver inflammation because the body’s immune system attacks its own liver cells.
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