Mean Corpuscular Hemoglobin (MCH)
Introduction
MCH is calculated as Hb divided by total RBC count.
Normal range
Adults – 27-31Pg
New born – 33- 39Pg
Indications
Limited value in differential diagnosis of anemias; Used for instrument calibration.
Increased in
Macrocytic anemia, infants and newborns, marked leukocytosis( > 50,000/cu.mm),cold agglutinins, in vivo hemolysis, monoclonal proteins in blood, high heparin concentration, lipemia.
Decreased in
Microcytic and normocytic anemias.
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