In an noninterventional observational open multicenter program CHRONOGRAF the prevalence of markers of chronic kidney disease (CKD) was studied in 1600 patients with arterial hypertension with and without type 2 diabetes mellitus. Glomerular filtration rate (GFR) was calculated (CKD-EPI formula) and albuminuria (AU) was determined as albumin/creatinine (A/Cr) ratio in the morning portion of urine. In 49.4% of patients decreased GFR <60 ml/min/1.73 m(2) and/or A/Cr >30 mg/g was detected. Decrease of GFR <60 ml/min/ 1.73 m(2) was found in 34.8% of patients, albuminuria >30 mg/g - in 32.6%, combination of reduced GFR and high/very high AU - in 18%. High or very high level of combined risk of progression to CKD and cardiovascular complications had 28.5% of patients.