User Performance Evaluation of Contour® Plus One, Accu-Chek® Performa Connect, FreeStyle Optium Neo and OneTouch® Select Plus Blood Glucose Monitoring Systems Following ISO 15197:2013; EN ISO 15197:2015

Inclusion criteria

• Male or female, with type 1 diabetes, type 2 diabetes or subjects without diabetes
• Signed informed consent form
• Minimum age of 18 years
• Subjects are legally competent and capable to understand character, meaning and consequences of the study.
• If blood glucose values < 80 mg/dl or > 300 mg/dl shall be measured after short term alteration in insulin therapy:
• Male or female with type 1 diabetes and intensified insulin therapy or insulin pump therapy.
• Signature of subjects to document consent with these procedures on informed consent form.

Exclusion criteria

• Pregnancy or lactation period
• Severe acute disease (at the study physician's discretion)
• Severe chronic disease with potential risk during the test procedures (at the study physician's discretion)
• Current constitution that compromises the subject's capability to participate in the study (at the study physician's discretion)
• Being unable to give informed consent
• < 18 years
• Legally incompetent
• Being committed to an institution (e.g. psychiatric clinic)
• Language barriers potentially compromising an adequate compliance with study procedures
• Dependent on investigator or sponsor
• If blood glucose values < 80 mg/dl shall be measured after short term alteration in insulin therapy, subjects with type 1 diabetes, suffering from:
• Coronary heart disease
• Condition after myocardial infarction
• Condition after cerebral events
• Peripheral arterial occlusive disease
• Hypoglycemia unawareness

Inclusion and exclusion criteria defined by ISO 15197:2013; EN ISO 15197:2015:

• Only subjects with diabetes type 1 or type 2 will be included.
• Demographic data will be collected to demonstrate that subjects represent different ages, genders and education levels.
• In deviation from ISO 15197:2013; EN ISO 15197:2015, included subjects may have participated in a study involving the BGMS, but must not yet have performed measurements with the BGMS according to their own statement for the last 3 years.
• In addtition, included subjects did not use the BGMS being evaluated at home for the last 3 years according to their own statement.
• In order to ensure that capillary blood samples meet the requirements indicated in the manufacturer's labelling,
• a physician will review the subjects' anamnesis and medication and check for interfering substances indicated in the manufacturer's labelling.
• the hematocrit value of each subject will be checked to be within the range indicated in the manufacturer's labelling (hematocrit determination before or after the measurement procedure).