Currently, there are no available data on distribution of the values of glycated haemoglobin in patients with type 2 diabetes in the Czech Republic. More frequent, efficacy and early application of new antidiabetic agents is limited by indication criterion which restricts the payment of this therapy for patients with poorly compensated diabetes defined by threshold value of 60 mmol/mol (6% IFCC). The study Valetudo analyzed distribution of glycated haemoglobin values in the random population of patients with type 2 diabetes and showed that within the critical range from 43 mmol/mol to 80 mmol/mol is the average frequency of patients from the whole population of 1.88%/1 mmol/mol glycated haemoglobin. Interpretation of data from cross-sectional studies is very difficult as they involve patients before treatment (possibly before the intensification of therapy) and also patients successfully treated.Key words: diabetes mellitus type 2 - distribution of HbA1c - glycated haemoglobin - HbA1c - Valetudo project.