CPT® Code 85675

The CPT® Code 85675 refers to the procedure known as thrombin time; titer. This test evaluates the time it takes for blood to clot when thrombin, a key protein in the coagulation process, is introduced to a plasma sample. The thrombin time test, also known as thrombin clotting time (TCT), is crucial for diagnosing various conditions related to fibrinogen deficiency. Fibrinogen is a protein essential for blood clot formation, and its deficiency can arise from both congenital and acquired conditions. Congenital conditions include afibrinogenemia, where there is a complete absence of fibrinogen, hypofibrinogenemia, which is characterized by low levels of fibrinogen, and dysfibrinogenemia, where the fibrinogen present is dysfunctional. On the other hand, acquired conditions that may lead to fibrinogen deficiency encompass liver or renal diseases, disseminated intravascular coagulation (DIC), amyloidosis, malignancies, and the effects of anticoagulant drug therapy. The procedure involves mixing the blood sample with human thrombin and then measuring the time it takes for clot formation to occur, typically using photometric methods to ensure accuracy. In the context of CPT® Code 85675, the focus is specifically on measuring the thrombin time titer, which provides valuable information regarding the patient's coagulation status.