The millions of patients at risk of developing dementia may be identified at an early stage of disease at the primary health care. The aim of our study was to perform screening for dementia in patients older than 65 years.Clinical instrument that we used in the screening of dementia patients was the Montreal cognitive assessment: Serbian version. The investigation involved forty patients older than 65 years who were tested for the existence of cognitive impairment. The results were processed by a computer program for statistical analysis (SPSS, version 20), using the Student’s t-test and linear correlation. Of all respondents, in 80% causes was registered cognitive disorder and with age were deteriorated test results. Our results suggest the efficiency and simplicity of screening programs on dementia, which could be implemented in daily practice.