Comparative Measurement of Microcirculation and Other Parameters With the Vital USA VitalDetect™ in Patients With Diabetes Mellitus Type 1 and Type 2 Versus Healthy Participants

The study procedures will be the same for all three groups during the single visit. In all groups of participants, the Vital USA VitalDetect™ will be individually introduced and assigned. During the experimental study visit, microcirculating blood flow (MBF), heart rate, and SpO2 will be measured using the Vital USA VitalDetect™ at 2 time points in between approx. 15 min. MBF will be measured in parallel by use of the LEA Medizintechnik O2C also using a finger on the same hand. The YSI glucose measurements will be employed to generate a robust algorithm for glucose measurements using the VitalDetect™. Parallel measurements of the heart rate and the SpO2 using a patient monitor (Edan iM8b) will be compared to the Vital USA VitalDetect™ device readings. Venous blood will be drawn from every subject to determine proinsulin, insulin and HbA1c values.