Nowadays obesity became a pandemic condition all over the world including the pediatric population. Childhood obesity is not only the risk of obesity in the future but first of all the increased risk of cardiovascular and metabolic diseases. Early diagnostic of the risk factors of cardiovascular diseases included as criteria of metabolic syndrome, in spite of controversy in defining this condition, helps in differentiation of the patients from the high risk group. Aim of the study was to assess the presence of the metabolic syndrome criteria in obese patients admitted to Pediatric Clinic for diagnostic procedure. Materials and methods: There were 112 obese (mean BMI 31.4) aged 10-17 years patients admitted foe diagnostic procedure to Department of Pediatrics. The detailed anthropometric measurements (included BMI, central obesity), biochemical tests and blood pressure monitoring were carried out in all patients. IDF 2007 definition was applied for diagnosis. Results: Metabolic syndrome was confirmed in 10.7% with male predominance 16.6% vs. 3.8%. The elevated values of blood pressure were found in 23.2% (28.3% boys vs. 17.3% girls), dyslipidemia concerning triglycerides in 8.9% (13.3% boys vs. 3.8% girls) and low HDL-cholesterol in 6.3%. Impaired glucose tolerance was observed in 5.3%. Conclusions: The differentiation of the frequency certain metabolic syndrome’s criteria in regards to sex suggests unequal influence of genetic and/or environmental factors. The most important risk factors in our patients seemed to be visceral obesity and hypertension.