Non-pregnant adults, ages greater than or equal to 18 years, admitted to VUMC
Able to give informed consent
Hyperglycemia requiring insulin therapy including subcutaneous insulin injection or continuous subcutaneous insulin infusion (patient's own insulin pump) during hospitalization and at the time of discharge
POC glucose or venous glucose levels in the 24 hours prior to participation need to be 70-350 mg/dL
Need glucose readings greater than or equal to one time per day
Mental status and dexterity adequate to use Libre 3 Plus or Dexcom G7 sensors with Libre 3 or Dexcom G7 application on patient's smartphone
You may not be if
Currently using Libre 3 Plus or Dexcom G7 CGMS during hospitalization or have used Libre 3 Plus or Dexcom G7 CGMS in the past 3 months
Does not have smartphone compatible with Libre 3 App or Dexcom G7 App
Received chemotherapy during current hospitalization
Planning on major surgery within 10-15 days
Hemodialysis or peritoneal dialysis
Requiring vasopressors, intubation, sedation, or admission to an intensive care unit
Vitamin C use of more than 500 milligrams per day
Hydroxyurea use
Acetaminophen use of more than 4 grams per day or 1 gram every 6 hours
Significant pitting edema (3+ or greater) i.e. cirrhosis with ascites, congestive heart failure with edema, nephrotic syndrome, or signs of poor perfusion
Presentation in diabetic ketoacidosis or hyperosmotic nonketotic state
