What field of study focuses on blood?

The field of study that focuses on blood is hematology. This branch of medicine is dedicated to understanding the nature, function, and diseases of blood and blood-forming tissues. Hematologists study various components of blood, such as red blood cells, white blood cells, platelets, and plasma, as well as blood disorders like anemia, leukemia, and clotting abnormalities.

Understanding hematology is essential for phlebotomy technicians, as they frequently work with blood specimens, conducting venipuncture for various tests that diagnose and monitor blood-related diseases. In contrast, cardiology focuses on the heart and its functions, neurology pertains to the nervous system and brain, and immunology deals with the immune system and its responses to pathogens. Each of these fields has a specific focus that does not primarily center on blood, making hematology the correct choice.