Can pregnancy affect CBC test results?

Yes, pregnancy can affect CBC test results. During pregnancy, changes in blood volume can cause a slight decrease in hemoglobin and red blood cell counts, a condition called physiological anemia of pregnancy. This happens because the plasma (fluid) part of the blood increases, diluting the concentration of red blood cells. Monitoring hemoglobin and hematocrit levels is essential in pregnancy to ensure that anemia does not develop. Regular CBC testing throughout pregnancy helps monitor the health of both the mother and baby and allows for early detection of any complications.