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 . 1. hematocrit2. differential WBC count3. total WBC count

The correct answer is option 1, that is, hematocrit.

Explanation:

Anemia refers to a condition in which the concentration of red blood cells gets reduced from their normal levels. The diagnosis of the condition is done with the help of a test known as complete blood count or CBC, which helps to determine different components of the blood. The test checks the levels of hematocrit and hemoglobin.  

The measurement of how much space is occupied by the RBCs in the blood is known as hematocrit and the iron-containing protein present in the RBCs is known as hemoglobin. If the test shows low concentrations of hematocrit or hemoglobin in the blood, it indicates that the person is suffering from anemia.  

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