Could a person have a normal RBC count but a low Haematocrit? What could be the cause of this?

As I can recall I dont think that if the RBC in normal the Hematocrit could be lower then normal.
But I am not an MD.
i will try to ask some one
Guy

Here is the answer given at ByeDr.com...


Yes. Hematocrit represents the percentage of the blood volume that is composed of blood cells.

Mathematically, it is:

Hct = RBC x MCV

(Hct = hematocrit, RBC = red blood cell count, MCV = mean corpuscular volume)

If your blood cells are really small (low MCV), then the hematocrit can be low even if you have the appropriate number of cells.

Common causes of microcytic anemia are iron deficiency, thalassemia, sideroblastic anemia, and lead poisoning. In addition, various chronic disease processes can result in a microcytic anemia. Fluid Volume Overload would also cause levels to appear falsly low (as dehydration would make them look falsly high)