Metabolic Phenotypes and Heterogeneity in Disease Burden Risk in Type 1 Diabetes

• All participants with type 1 diabetes
• Previous enrollment and participation in the University of Michigan T1D cohorts (Natural History of Myocardial Dysfunction in T1D (HUM00036408); Targeting Inflammation with Salsalate in a T1D(HUM00169353); Preventing Early Renal Loss with Allopurinol in T1D (HUM00080944); and Tissue Specific Metabolic Reprogramming (HUM00060967)).
• Willing and able to participate in the study procedures described in the consent form.
• Willing to sign a written or electronic informed consent, including authorization to release health information.
• Fluent in spoken and written English.
• Willing to carry around their mobile phone/study mobile phone during the 14-day home monitoring period with daily access to cellular or WiFi connectivity.

Exclusion Criteria:

• Any social or medical condition that would, in the opinion of the Principal Investigator (PI), prevent complete participation in the study or would pose significant hazard to the subject's participation.
• Skin conditions or diseases that would interfere with the Continuous Glucose Monitor (CGM) sensor placement or accuracy (such as extensive psoriasis, extensive eczema, scarring, etc.)
• Scheduled X-ray, MRI, CT scan, or high-frequency electrical heat (diathermy) treatment during the period of CGM wear (or any other activity that would necessitate CGM sensor removal) that cannot be scheduled around or accommodated within the study assessment windows.