The blanket protocol covers the execution of the Diabetes Technology Society (DTS) Blood Glucose Monitor System Surveillance Program that will consist of a series of similar accuracy sub-studies with marketed Blood Glucose Monitor Systems (BGMS) conducted by the Clinical and Laboratory site(s) chosen for this study. The two parts of the study (BGMS testing and comparative glucose analyzer testing) will be conducted in separate facilities (clinical site and laboratory site) so the clinical and laboratory investigators will be blinded from each other's results.