[Kidney function in diabetic patients with diabetes of a duration less than 15 years]

All diabetics of a closed population were examined in respect to their renal function by means of their level of serum creatinine. 1,380 out of 1,490 diabetics (type I and type II) have their diabetes less than 15 years. The serum creatinine values are increased in 24.9% of these diabetics. The frequency of chronic renal insufficiency rose steply after a diabetes period of 15 and more years. A classification of the diabetics in groups with equal diabetes period showed that renal insufficient diabetics are significant older than those with normal renal function. The results of the investigation emphasize the demand to enclose the nephropathy in the diagnostic scale of diabetics with short disease period, too, to become therapeutic effectively very early.