All of the following may be observed in a normal pregnancy EXCEPT:
Blood thins out in pregnancy due to the hemodilution of pregnancy. The increase in Blood volume (30-45%) is relatively greater than that of red cell mass (20-30%) resulting in hemodilution and a decrease in haemoglobin concentration. Fibrinogen as well as factors VII , IX, X and XII increase markedly. These changes tend to prevent excessive bleeding at delivery. Pregnancy is a hyper-coagulable state thus, but this is not synonymous with "Increased viscosity" .
Fall in serum iron concentration
Increase in serum iron binding capacity
Increase in blood viscosity
Increase in blood oxygen carrying capacity
Physiological Changes of Pregnancy