Introduction: Urolithiasis (UCD) is the most common and most expensive urological disease in all regions of the planet. The study of the prevalence of types of urinary stones in different areas of the country and the world plays an important role in predicting the burden on the health care system as a whole and the urological community, including in terms of calculating the probability of recurrence of the disease, even against the background of effective metaphylactic
therapy.
Purpose: in connection with the above, we made an attempt to assess the prevalence of various types of urinary stones in various regions of the Russian Federation, Belarus, Kazakhstan and the dynamics of changes in the composition of urinary stones depending on age and
gender.
Materials and methods: the study is based on data from a study of the chemical composition of 6787 urinary stones, presented by INVITRO in an anonymized form for the period 2018–2021. The study of the chemical composition of stones was carried out by infrared spectroscopy and/or X-ray diffraction.
Results. The prevalence of one-, two- and multi-component urinary stones of the adult population and children in both sexes of the Russian Federation, the Republics of Kazakhstan and Belarus was estimated. Separate regularities in the distribution of the component composition of stones in each region, with age and gender, were noted.
Conclusion. The study of the composition of urinary stones is important in choosing an adequate tactic for metaphylactic treatment.

Keywords: distribution by region, mineral composition of urinary stones, age, sex, urolithiasis