The normal value is 0.4-0.5 for men and 0.35-0.45 for women. low erythrocyte pressure product is seen in various kinds of anemia and hemodilution. The hemoglobin should not be lower than 100g/L, which also causes a low erythrocyte pressure product, therefore, a low erythrocyte pressure product alone is normal in pregnancy. If the hemoglobin is below 100g/L at the same time, you need to see your doctor.