CGM Device Comparison
Compare and contrast FDA-approved CGM systems to find what is right for each individual patient and your practice.
FDA Early Alert: FreeStyle Libre 3 and FreeStyle Libre 3 Plus CGM Sensor Issue
The FDA has issued an Early Alert for select FreeStyle Libre 3 and FreeStyle Libre 3 Plus CGM sensors due to reports of falsely low glucose readings that may affect treatment decisions. This alert does not apply to the Libre 3 app, reader, or other Libre products. Read the full FDA alert here.
Personal CGM Devices
Abbott Lingo
Every 1 minute, sent to smart device
≥ 18 yrs, not on insulin
Back of Upper Arm
14 days
No
1 hr
> 1000 mg of Vitamin C per day
No
Abbott FreeStyle Libre 2 Plus
Measures and sends glucose readings to reader/smart device every 1 minute
≥ 2 yrs
Back of Upper Arm
15 days
No
1 hr
> 1000 mg of Vitamin C per day
Yes
Dexcom G7 15 Day
Glucose readings sent to receiver/smart device every 5 minutes
≥ 18 yrs
Back of Upper Arm
Up to 15 days + a 12-hour grace period
No Required
60 min
Hydroxyurea; high dose acetaminophen (> 1 g every 6 hrs in adults).
Yes
Instinct Sensor by Abbott
Every 5 minutes, sent to the pump
≥ 2 yrs
Back of Upper Arm
Up to 15 days
No, factory calibrated
1 hr
> 1000 mg of Vitamin C per day
Yes
Information for Patients
LINK
Abbott FreeStyle Libre 3 Plus
Measures and sends glucose readings to reader/smart device every 1 minute
≥ 2 yrs
Back of Upper Arm
15 days
No
1 hr
> 1000 mg of Vitamin C per day
Yes
Medtronic Simplera
Every 5 minutes, sent to smart device
≥ 18 yrs
Back of Upper Arm
Up to 6 days, with a 24-hour grace period
No, factory calibrated
2 hr
Acetaminophen or paracetamol; hydroxyurea
Yes
Medtronic Simplera Sync
Every 5 minutes, sent to the pump
≥ 2 yrs
Back of Upper Arm
Up to 6 days, with a 24-hour grace period
Optional
2 hr
Acetaminophen or paracetamol; hydroxyurea
Yes
Dexcom G7
Glucose readings sent to receiver/smart device every 5 minutes
≥ 2 yrs
Back of upper arm (Also, upper buttocks for patients 2-6 years)
10 days + a 12-hour grace period
Factory calibrated. Calibrate option available but not required
30 min
Hydroxyurea; high dose acetaminophen (> 1 g every 6 hrs in adults)
Yes
Stelo by Dexcom
Sent to compatible smart device every 15 minutes
18 years and older, not taking insulin and not at risk of hypoglycemia.
Available OTC/Direct to consumer, no Rx necessary!
Back of upper arm
up to 15 days + a 12-hour grace period
No
30 min
Acetaminophen doses higher than the maximum dose (e.g. >1 gram every 6 hours) may affect the sensor readings. Hydroxyurea is known to interfere with sensor readings.
No audible alerts or alarms. Visual notifications and glucose insights provided
Medtronic Guardian Connect
Glucose readings sent to smart device every 5 minutes
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
DOWNLOAD
