What does a CBC test measure?

A Complete Blood Count (CBC) test measures various components of blood, including red blood cells, white blood cells, hemoglobin, hematocrit, and platelets. It provides valuable information regarding the overall health of an individual, indicating conditions such as anemia, infection, and many other medical issues. By analyzing these components, healthcare providers can assess a patient's immune response, oxygen-carrying capacity, and ability to form blood clots, which are crucial for diagnosis and treatment decisions.

The other options do not apply to a CBC test. Assessing brain function involves different neurological tests, while cholesterol levels in arteries pertain to lipid panels or other specific tests evaluating cardiovascular risk. Bone density evaluation is performed using specialized imaging techniques, such as a DEXA scan, to assess overall bone health and the risk of osteoporosis.