The diabetic type of glucose tolerance tests was revealed in 16% of the women with glycosuria during pregnancy and in 8% of the women of control group without any other risk factors in respect to diabetes mellitus. The results of remote follow up over the women of the both groups are presented. Glycosuria during pregnancy should not be considered prognostically unfavourable in case of normal glucose tolerance test results; pathogenesis of such glycosuria during pregnancy was not associated with insulin insufficiency. Glycosuria during pregnancy served as an indication of the glucose tolerance test for the purpose of timely detection of latent diabetes.