Which of the following tests is commonly performed in hematology?

The Complete Blood Count (CBC) is a fundamental test commonly performed in the field of hematology. This test evaluates various components of the blood, including red blood cells, white blood cells, hemoglobin, hematocrit, and platelets. It provides comprehensive information about a person's overall health and can help in diagnosing conditions such as anemia, infection, and many other diseases.

In contrast, while the blood glucose test is primarily related to metabolic function and diabetes management, and liver function tests focus on the health of the liver by measuring enzymes and proteins in the blood, neither of these falls under the hematological category. The coagulation profile is indeed relevant to blood and pertains to the clotting ability of the blood. However, it is more specific to assessing bleeding and clotting disorders rather than providing a complete overview of blood cell components, which is the primary focus of hematology. Therefore, the CBC is the most representative test of hematology practices, making it the correct choice.