RBC indices

When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing.

MCV values reflect the size, and MCH and MCHC reflect the hemoglobin concentration of individual cells. These RBC indices are useful in the diagnosis of types of anemia.

Anemias are classified on the basis of cell size (MCV) and amount of Hgb (MCH).

• MCV less than lower limit of normal: microcytic
• MCV within normal range: normocytic
• MCV greater than upper limit of normal: macrocytic
• MCH less than lower limit of normal: hypochromic
• MCH within normal range: normochromic
• MCH greater than upper limit of normal: hyperchromic

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