Haemoglobin in Cord Blood in Normal and Prolonged Pregnancy

There have been few investigations on the haemoglobin level in foetal blood at different stages of human pregnancy.While studying the oxygen saturation in cord blood (Rooth and Sj6stedt, 1957), we also measured the amount of haemoglobin in some infants.Material Four hundred and fourteen healthy infants born in the Department of Obstetrics and Gynaecology were investigated.In no case was pregnancy complicated by toxaemia.All infants were delivered spontaneously without complications in occipitoanterior presentation and they showed no signs of asphyxia.In order to obtain reliable information on the duration of gestation, the dates on menstrual age were carefully checked.Only cases with a regular menstrual cycle were included and any in which the duration of pregnancy was in doubt were excluded.Techniques