Brigham and Women's Hospital
The goal of this observational study is to learn why some adults over the age of 65, have A1c tests that do not match up with their blood glucose levels, also known as 'A1c-glucose discordance'. The main question it aims to answer is: Could alternative tests like CGM or personalized A1c provide more accurate diabetes screening in this population? Participants will be asked to perform blood tests every week to two weeks and wear a CGM for up to 8 weeks.
Inclusion Criteria: * Age 65 years of age or older * A1c 5.3% - 7.4% without a diagnosis on the problem list and/or current or prior treatment for diabetes * Evidence of A1c discordance by meeting one of two criteria developed by an EHR based algorithm * At least five (5) HbA1c values and three (3) CBC values available in the EHR in the previous 10 years * Willingness to wear an Abbott Freestyle Libre 3 System Sensor for up to 48 days * Willingness to consent to data collection using the electronic health record and sign a medical release to obtain future medical records from other health car…
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