A random plasma glucose method for screening for abnormal glucose tolerance in pregnancy.

A method is described for screening all pregnant women for abnormal glucose tolerance. It is based on determining random plasma glucose at 28-30 weeks gestation, having simply noted whether the woman had eaten within the preceding 2 h. If the random plasma glucose level was greater than or equal to 97.5th centile, a 75 g oral glucose tolerance test was performed. This method of screening is cheaper and slightly more efficient than screening based on conventional risk indications.