[Control of the metabolic state of diabetic patients by determining the concentration of serum glycosylated proteins (the fructosamine test)].

The method for determining glycosylate serum proteins is based on the ketoamines property (fructosamine) of reducing nitro-tetrazoline blue, in alkaline medium, to a coloured, photometric product. The technique is simple, rapid, reproducible and cheap. The method was used for investigation of 52 diabetics and 17 normal subjects. The normal values were between 1.50-2.70 mmol/l, uncertain between 2.70-3.00 mmol/l, and certainly pathological above 3.00 mmol/l. The level of serum fructosamines shows the glycemia variations for an average period of about two weeks, before determination. It is one of the valuable parameters for detecting and following the patients with diabetes mellitus, and has also a prognostic value in the evolution of the disease.