What is the primary laboratory test to assess clotting function?

The primary laboratory test to assess clotting function is the coagulation profile. This test is specifically designed to evaluate the blood's ability to clot and can provide critical information about various components of the coagulation cascade. It typically includes tests such as prothrombin time (PT), activated partial thromboplastin time (aPTT), and platelet counts, which help to assess different pathways of the coagulation process.

In contrast, a complete blood count primarily evaluates the levels of different blood cells such as red blood cells, white blood cells, and platelets, but does not give specific information regarding clotting function. Urinalysis focuses on the analysis of urine for various substances and does not pertain to blood coagulation. An electrolyte panel measures the levels of key electrolytes in the blood but does not provide insights into the coagulation status. Hence, the coagulation profile is the most relevant and comprehensive test for assessing clotting function effectively.