Final answer:
In a Coagulation Department, the tests conducted would primarily involve blood clotting time such as the International Normalized Ratio (INR), which is related to the liver's production of coagulation factors.
Step-by-step explanation:
Common tests conducted in a Coagulation Department would typically involve assessing the blood's ability to form clots, as the name implies. The answer to the student's question is C) Blood clotting time. Tests such as the International Normalized Ratio (INR) are used to measure the speed of the blood's coagulation pathways. Liver functions are indeed related to coagulation as the liver produces coagulation factors, which are crucial to the clotting process. However, the tests directly assessing coagulation, such as INR, are the most pertinent to the Coagulation Department's work.
A Complete Blood Count (CBC) is not a coagulation test but rather a general test that examines the levels of different types of blood cells, such as red blood cells, white blood cells, and platelets. While platelets are involved in clotting, CBC is broader and not specific to the clotting function of blood.