Analytical Performance Evaluation of Blood Glucose Monitoring Systems- Investigator Sponsored Contour® XT Comparator Study - Ulm Germany

Inclusion Criteria: * 18 years of age or older * Male or female subjects with type 1 or type 2 diabetes or healthy subjects * For BG adjustment people with type 1 diabetes Exclusion Criteria: * Severe acute illness that, in the opinion of the Investigator, might pose additional risk to the patient * Chronic illness that, in the opinion of the Investigator, might pose additional risk to the patient * Current condition that, in the opinion of the Investigator, doesn't enable subject to participate in the study * For BG adjustment people with type 1 diabetes without CHD, condition after myocardial infarction, PAOD, cerebral events or hypoglycaemia unawareness * Legal incompetence or limited legal competence * Age \< 18 years * Dependency from the sponsor or the clinical investigator * Mental incapacity or language barriers precluding adequate compliance with the study procedures