What does a complete blood count (CBC) assess?

A complete blood count (CBC) is a comprehensive test that provides valuable information about the various components of the blood. It specifically assesses the levels of red blood cells, white blood cells, hemoglobin, hematocrit, and platelets. These components play critical roles in overall health:

• Red blood cells (RBCs) are responsible for transporting oxygen throughout the body.

• White blood cells (WBCs) play a key role in the immune system, helping to fight infections and other diseases.

• Hemoglobin, the protein within red blood cells, binds to oxygen, facilitating its transport.

• Hematocrit measures the proportion of blood volume that is occupied by red blood cells, indicating blood health and hydration status.

• Platelets are essential for blood clotting and preventing excessive bleeding.

The results of a CBC can help identify a range of conditions, from anemia to infections to blood disorders, making it an essential tool in medical diagnostics. Other choices focus on different areas of health assessment, such as metabolic functions or liver enzymes, which fall outside the scope of a CBC.