Comparison Study of Blood Glucose Monitoring Systems in People With Diabetes

Inclusion Criteria: * Subjects diagnosed with type 1 or type 2 diabetes mellitus * Age between 18 and 75 years. * Patients with stable blood glucose in judgment of the investigator. * Subjects receive intensive insulin therapy (Multiple Daily Injection defined as at least two insulin injections per day) * Patients perform blood glucose self measurements on a routine basis * Patients must have experience in self measurement blood glucose for at least 6 months. Exclusion Criteria: * Patients with unstable blood glucose in judgment of the investigator. * Patient has been diagnosed with progressive / serious diseases that in judgment of the investigator preclude successful completion of the observational period. * Lack of compliance or other justifications that, in the discretion of the investigator, precludes satisfactory participation in the study. * Subject without legal capacity. * Blood donation within the last 30 days. * Known pregnancy. * Subject has already participated in the study.