[Absolute and relative errors of individual determination of cytochemical indices in clinical practice].

The study assesses absolute and relative errors in the calculation of cytochemical indices in a precise patient. At present, the semiquantitative index (the mean cytochemical coefficient (MCC) after G. Astaldi and L. Verg) is widely used to evaluate the cytochemical activity of leukocytes. At the same time other indices, such as differentiating cytochemical coefficient (DCC) after I. G. Bondarenko, occasionally find application. Analysis of the results of simulation of an array containing 500 leukograms has demonstrated that the individual relative detection error for MCC ranges from 13 to 21% and that for DCC 20 to 51%. The results of the study enable an adequate estimation of the ways of expressing the cytochemical findings, which are proposed by different authors.