Choosing the right continuous glucose monitors (CGMs)
There are two standalone CGMs to choose from.
We are working with a variety of different groups to get more information about CGMs and insulin pumps. This includes comparison tables, FAQs, how to use the devices, and information for health care practitioners.
Keep an eye on these pages for updates or sign up to our mailing list so we can update you(external link).
Freestyle Libre 2 and the Dexcom ONE+
The two CGMs have different features.
|
Compare |
Dexcom One+ |
Abbott Freestyle Libre 2 |
|---|---|---|
|
Image (not shown to scale) |
 |
 |
|
Supplier |
NZMS |
Abbott |
|
Accuracy (MARD) |
8.2% |
9.2% |
|
Warm-up period |
30 min |
60 min |
|
Sensor life |
10 days |
14 days |
|
Combined sensor size |
4.7 mm (H) x 27.4 mm (L) x 24.1 mm (W) |
5.1 mm (H) x 35 mm (Diameter) |
|
Weight |
3.3 g |
5 g |
|
Separate reader device if required |
Yes |
Yes |
|
Water resistance (Ingress Protection) |
IP28: immersion in water for up to 2.4 meters for 24 hours |
IP27: immersion in water for up to 1 meter for 30 minutes |
|
Ability to use in AID system |
No |
No |
|
Range |
6 metres |
6 metres |
|
Alarm functionality |
High (5.5 - 22.2 mmol/L) and Low (3.3 -8.3 mmol/L) Glucose alert level, signal loss and system alarms |
High (6.7 - 22.2 mmol/L) and Low (3.3 -5.6 mmol/L) Glucose alert level, signal loss and system alarms |
|
Live data sharing |
No |
Yes (through LibreLinkUp(external link)) |
|
Data Sharing with Health Care Providers |
Yes through Dexcom Clarity |
Yes through LibreView |
|
Glucose Reading Frequency |
Every 5 minutes |
Every minute |
|
Approved sites |
Multiple Sites |
Upper arm |
Do I need a smartphone?
We understand that using a smartphone to read your CGM might not work for everyone. Each CGM offers different ways to read the data from the device.
Some suppliers have a standalone reader device available.
What if I change my mind?
You can swap between the two funded CGMs when you get a new prescription. You do not need a new special authority. Just ask your doctor to prescribe the other CGM.
There will be differences in how each CGM works. You may need advice on getting the most out of your CGM.
Learning how to use CGMs
We are working with the suppliers of CGMs and diabetes support groups to develop resources so people can get the most out of their CGM.
We will add more information once it’s available.
Sign up for email updates(external link)
What happens if one or more are faulty?
We know that sometimes technology doesn’t work the way it’s supposed to. Reach out to the supplier or your pharmacist in the first instance.