Objective. Assessment of the distribution of test results for the estimated glomerular filtration rate by stages of CKD
(from 1 to 5 as renal function decreases), as well as assessment of the possibility of detecting of patients with a high stage of asymptomatic CKD at the initial screening.
Materials and methods: 77,719 tests were analyzed for the period 01.12.2014 - 28.10.2020. For the analysis, data selected from the unified INVITRO database and completely (irreversibly) depersonalized were used.
Results: More than half of the remaining results (63,920 tests) were abnormal (GFR <90). Over 5 years of follow-up, the number of such patients was 32,235 (50.5%), 6866 (10.8%) cases of serious deviations (CKD stage 3-5). The dynamics of GFR testing showed a gradual increase in the number of tests starting at the end of 2014 (when this test began to carried out in INVITRO) from 0 to 500 tests per month taken from corporate clients and 1000 tests per month taken from patients without referral. The prevalence of CKD stage 3–5 among adults was 2.7%. In October 2018, a significantly lower percentage of identified CKD stage 3-5 and a significantly higher percentage of normal GFR values were recorded. These results were obtained during a publicity campaign, and active educational work in the media, including central television and popular high-circulation magazines during the period of 2018.

Keywords: estimated glomerular filtration rate, chronic kidney disease, screening