CPT® Code 86148

The CPT® Code 86148 refers to a laboratory test that measures the levels of anti-phosphatidylserine (phospholipid) antibodies in the blood. These antibodies, which include immunoglobulin classes IgG, IgM, and IgA, are found in the membranes of endothelial cells and platelets, playing a crucial role in the coagulation cascade, which is the process that leads to blood clotting. The presence of elevated levels of these antibodies can be clinically significant, particularly in patients who have experienced unexplained thrombotic events, which are instances of blood clots forming in blood vessels. Additionally, symptoms such as swelling and pain in the extremities or joints, headaches, respiratory distress, recurrent fetal loss, thrombocytopenia (a condition characterized by low platelet counts), or elevated partial thromboplastin time (PTT) may warrant this testing. A negative result indicates that the antibodies are not present at the time of testing, but if symptoms persist, it is advisable to repeat the test. Conversely, a positive result for one or more of these antibodies may be significant when correlated with the presence of symptoms, and follow-up testing is recommended in 8 to 10 weeks to assess whether the elevation in antibody levels is persistent or merely temporary. The blood sample for this test is obtained through a venipuncture, which is a procedure that involves puncturing a vein to draw blood, and the serum is analyzed using a semi-quantitative enzyme-linked immunosorbent assay (ELISA) method.