[Characteristics of glycosylated hemoglobin distribution]

On the basis of 1518 values of concentration of glycosylated Hb in blood of workers responsible for safety in railroad transportation authors tried to calculate the range of normal values of this parameter. It was assumed that distribution of GHb in a healthy part of population is normal. From the primary set of data, values most distant from the arithmetic mean were gradually discarded until distribution of values was as close to the normal distribution as attainable. The best fit to the normal distribution was obtained for 1486 values. The normal range was then 4.6 to 8.6% (mean +/- 2 SD). The normal range was in a good agreement with published data as well as with own analytical experience.