[Method of early diagnosis of latent diabetes mellitus and the prediabetic state].

Insulin was found out in erythrocytes of patients with diabetes mellitus, in subjects with hereditary predisposition to this disease and in the control group by means of cytochemical method. Insulin-containing erythrocyte (ICE) number was reduced in patients with an evident form of diabetes mellitus and in 50% of patients of the 2nd group (less than 60%). Of them, 10% showed the curves of diabetes mellitus, whereas those of the other 20.3% were questionable and 70% had the normal glycemic curves. The latter are regarded as prediabetic patients.