[The clinical significance of HbA1c determination in diabetics].

It is reported on HbA1c as a suitable screening method for the estimation of a long-range situation of metabolism in diabetics. The relations of HbA1c-concentration to the level of blood glucose and to the secretion quantity of urine glucose are represented. The highest HbA1c-concentrations found out do not correlate with the level of the single concentration of blood glucose which as a rapid method are not representative for the whole position of glycaemia. Further investigations concerning the estimation of the temporal interval of the change of the HbA1c-concentration in dependence on blood glucose and urinary glucose concentration must be carried out.