Medical Assistant Certification (MAC) AMCA Practice Exam

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Which of the following is NOT a component measured in a complete blood count?

Platelets
Hemoglobin
Electrolytes
Hematocrit

The correct answer is: Electrolytes

A complete blood count (CBC) is a comprehensive blood test that evaluates several different components of the blood to provide important information about a person's overall health and to help diagnose various conditions. The main components measured in a CBC include: - Platelets, which are essential for blood clotting. - Hemoglobin, which carries oxygen from the lungs to the rest of the body. - Hematocrit, which measures the proportion of blood volume that is made up of red blood cells. Electrolytes, on the other hand, are minerals found in the blood and other body fluids that carry an electric charge and are important for many bodily functions, but they are not included in a complete blood count. Instead, electrolyte levels are typically measured in a separate test known as a comprehensive metabolic panel (CMP) or basic metabolic panel (BMP). Understanding the purpose of the CBC and its specific components helps clarify why electrolytes do not belong to this particular test.