Microalbuminuria (MAU) and a reduction in glomerular filtration rate are independent predictors of cardiovascular morbidity and mortality. Aim was to assess the role of MAU in risk stratification of non-diabetic hypertensive patients. The subgroup of patients with MAU was much more likely to show the other signs of subclinical organ damage as compared to patients with left ventricular hypertrophy, carotid abnormalities or increased pulse wave velocity. Thus, MAU is the integral marker of subclinical organ damage.