A person who has symptoms of paleness and chronic fatigue is suspected of having anemia. To investigate this suspicion further, it would be most helpful to measure .

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Hematocrit measures the proportion of red blood cells in a person's blood, which is directly related to anemia. Anemia is characterized by a decrease in the number of red blood cells or the amount of hemoglobin in the blood, leading to symptoms like paleness and fatigue. Measuring hematocrit can help determine the severity of anemia.

A Person Who Has Symptoms of Paleness and Chronic Fatigue