What does a CBC test assess?

What does a CBC test assess?

• A. Increases blood cell counts
• B. Measures kidney function
• C. Red blood cells, white blood cells, and platelets
• D. Assesses liver enzymes

Answer: (C)

The main thing a CBC does is quantify the cellular components of blood. It reports the numbers of red blood cells, white blood cells, and platelets, along with related values like hemoglobin and hematocrit. Each component serves a key role: RBCs carry oxygen, WBCs defend against infection, and platelets help with clotting. This combination provides a snapshot of oxygen-carrying capacity, immune status, and clotting potential, helping to detect anemia, infections, and bleeding disorders. Other options point to organ-function tests (kidney function and liver enzymes) or describe a potential change rather than what the test measures, so they don’t fit what a CBC assesses.

The main thing a CBC does is quantify the cellular components of blood. It reports the numbers of red blood cells, white blood cells, and platelets, along with related values like hemoglobin and hematocrit. Each component serves a key role: RBCs carry oxygen, WBCs defend against infection, and platelets help with clotting. This combination provides a snapshot of oxygen-carrying capacity, immune status, and clotting potential, helping to detect anemia, infections, and bleeding disorders. Other options point to organ-function tests (kidney function and liver enzymes) or describe a potential change rather than what the test measures, so they don’t fit what a CBC assesses.