[Screening of diabetes in pregnancy. Standard value criteria for 50g-oGTT and fasting blood sugar as simple screening parameter with high accuracy].

Standard value criteria are presented on the basis of 1313 50g-oGTT for assessing carbohydrate metabolism in pregnancy (after the 26th week). The causes of the pregnancy-specific low levels are discussed. The difficulties in comparing these values with those reported by other authors, are pointed out. The authors deal extensively with the various load doses, conditions determining the decrease and glucose determination methods, and attempt to correlate the results with other data. The authors recommend fasting blood sugar values as a simple screening parameter for selecting those pregnant women on whom oGTT would be performed. This results in almost 90% coverage for pathological carbohydrate tolerance, i.e. a result which is superior to the results obtained with all other methods communicated so far. With this method, every 15th pregnant woman is required to undergo a costly and time-consuming test.