Which department would analyze a sample for blood gases?

The department that analyzes a sample for blood gases is the Chemistry department. This department is responsible for performing tests that analyze various substances in the blood, including electrolytes, glucose, and gases such as oxygen and carbon dioxide. Blood gas analysis is specifically critical for assessing a patient's respiratory and metabolic functions, making the Chemistry department the most appropriate choice for this type of testing.

Other departments focus on different aspects of blood and patient health. Hematology primarily examines blood cells and blood disorders, while the Blood Bank is concerned with blood typing, crossmatching, and the storage of blood products. Microbiology deals with identifying infectious agents in bodily fluids, such as bacteria and viruses, rather than analyzing the gases present in blood. Thus, the Chemistry department's role in blood gas analysis is pivotal and well-defined within the scope of laboratory testing.