Which test is used to monitor coagulation in patients?

The D-dimer test is specifically designed to assess coagulation, primarily to help in the diagnosis and monitoring of thrombotic disorders. It measures the levels of D-dimer, a fibrin degradation product that is present in the blood after a blood clot dissolves. Elevated levels of D-dimer in the blood are indicative of increased clot formation and breakdown, which can occur in various conditions, including deep vein thrombosis (DVT) and pulmonary embolism (PE). Therefore, it is an essential tool for monitoring coagulation status in patients who are at risk for or are being treated for clotting disorders.

In contrast, other options do not focus on coagulation. Thyroid function tests assess hormonal levels related to the thyroid gland, which have no direct connection to coagulation pathways. A complete metabolic panel is a comprehensive blood test that evaluates various chemical balances and metabolic functions but does not specifically target coagulation factors. The skin prick test is primarily used to identify allergies through the response of the immune system, unrelated to blood coagulation. Thus, the use of the D-dimer test firmly situates it within the realm of monitoring coagulation.