[Discrimination value of tests performed with the STAPHYtest Lachema from the aspect of clinical microbiology].

The authors characterize individual tests of the STAPHYtest Lachema and some other selected tests by calculating their discriminating capacity on 16 types of staphylococci which are most frequently isolated in clinical microbiological laboratories. Individual tests are characterized by the separating value, as described by Gyllenberg and Rypka, the variation index of Sneath and the consistency index. As regards discrimination, tests involving fermentation of trehalose, sucrose and glycerol are of no value. Conversely more important tests are lacking--sorbitol, melisitose, ONPG, DNA-ase, arginine.