[The mass-spectrometry as a new word in clinical microbiology].

In the end of XX century real revolution occurred in field of methods, which can be applied for identification of agents of infections including bacteria. Alongside with cultural diagnostic entered an arsenal of molecular genetic methods and proteomic analysis based on application of physical technologies including matrix activated laser desorption/ionization time-of-flight mass spectrometry - MALDI-ToF MS as well. The international experience of application of MALDI-ToF MS as species identification of microorganisms isolated from clinical samples substantiates high importance of method.