CGM Device Comparison
Compare and contrast FDA-approved CGM systems to find what is right for each individual patient and your practice.
Personal CGM Devices
Abbott Freestyle Libre 2
Measures glucose every minute; records glucose level every 15 mins
Unblinded
≥ 4 yrs
Back of Upper Arm
14 days
No
1 hr
Ascorbic acid
Yes
Abbott Freestyle Libre 14
Measures glucose every minute; records glucose level every 15 mins
Unblinded
≥ 18 yrs
Back of Upper Arm
14 days
No
1 hr
Ascorbic acid; salicylic acid
No; trend arrows
Dexcom G6
Glucose readings sent to receiver/smart device every 5 mins
Unblinded
≥ 2 yrs
Abdomen (Also, upper buttocks for patients 2-17 yrs)
10 days
No
2 hr
Hydroxyurea; high dose acetaminophen (> 1 g every 6 hrs in adults)
Yes
Medtronic Guardian Connect
Glucose readings sent to smart device every 5 mins
Unblinded
14-75 yrs
Abdomen or back of upper arm
7 days
Yes (After initialization, at least every 12 hrs)
2 hr
Acetaminophen or paracetamol
Yes
Professional CGM Devices
Abbott Freestyle Libre Pro
Records glucose level every 15 mins
Blinded
≥ 18 yrs
Back of Upper Arm
14 days
No
1 hr
Ascorbic acid; salicylic acid
No
Dexcom G6 Pro
Glucose readings sent to receiver/smart device every 5 mins
Blinded or unblinded
≥ 2 yrs
Abdomen (Also, upper buttocks for patients 2-17 yrs)
10 days
No
2 hr
Hydroxyurea; high dose acetaminophen (> 1 g every 6 hrs in adults)
Yes (unblinded)