Which test is commonly performed to assess for pneumonia by evaluating white blood cell count?

The complete blood count (CBC) is a common test performed to assess for pneumonia, particularly through the evaluation of white blood cell (WBC) count. In the context of pneumonia, an elevated WBC count can indicate the presence of infection and inflammation, which are key features of this respiratory condition. Clinicians often use the CBC to identify not only the number of white blood cells but also specific types of cells, which can provide further insight into the nature of the infection.

For example, a predominance of neutrophils might suggest a bacterial infection, while an increase in lymphocytes might indicate a viral infection. This diagnostic tool is essential in the perioperative setting, as it helps guide treatment decisions and assess overall patient health prior to surgery.

The other tests mentioned, such as the blood glucose test, electrolyte panel, and liver function test, focus on different aspects of health. The blood glucose test primarily measures sugar levels, the electrolyte panel assesses the balance of minerals in the body, and the liver function test evaluates the health of the liver. While these tests are important for holistic patient assessment, they do not directly relate to evaluating for pneumonia.