system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
All of the following may be observed in a normal pregnancy EXCEPT:
assistant
The correct answer is  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" .