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What is Normal PCV value is? and explain in detail?
Ans. is 'b' i.e. 40-45% * Normal values are about 45% for men and about 42% for women.Hematocrit or Packed cell volume (PCV)* It is the proportion of blood volume that is occupied by red blood cells.* A decrease in the number or size of red cells also decreases the amount of space they occupy, resulting in lower hematocrit.* Similarly an increase in the number or size of red cells increases hematocrit.* Exceptions are thalassemia which can cause an increased number of red blood cells but a decreased size and hematocrit, and megaloblastic anemia which causes increase in size of red cells with decreased hematocrit