CPT® Code 86146

The CPT® Code 86146 refers to the laboratory test for the detection of beta 2 glycoprotein I antibodies in a blood sample. These antibodies are part of a diverse group of autoantibodies that are primarily associated with antiphospholipid syndrome (APS), a condition that can lead to serious complications such as recurrent venous or arterial thrombosis and fetal losses. The presence of these antibodies is significant in the diagnosis of APS, as they indicate an autoimmune response that may contribute to the formation of blood clots. In clinical practice, when a patient is suspected of having APS, healthcare providers will typically order this test to measure the levels of anti-beta-2 glycoprotein I antibodies, specifically looking for the immunoglobulin G (IgG) and immunoglobulin M (IgM) types. It is important to note that testing for these antibodies is generally conducted on two separate occasions, with a minimum interval of twelve weeks between tests, to confirm persistent elevation, which is a key criterion for diagnosing APS. Each type of antibody (IgG and IgM) is reported separately, allowing for a comprehensive assessment of the patient's autoimmune status.