A small sensor on your arm reads your glucose every minute, day and night. If you wear a FreeStyle Libre and share your data with us, we see those patterns at every visit — and we can act on them. This page explains why we use CGM, how to connect your sensor to our clinic, and what we plan to share publicly as our program grows.
Why CGM changes the conversation
For decades, diabetes care relied on three data points: today’s fingerstick, this week’s symptoms, and a lab A1C every three months. A1C reflects your average glucose over 90 days — but two patients with the same A1C can have entirely different stories. One spends most of the day in a healthy range with no spikes. The other swings between dangerous lows and high spikes that cancel each other out arithmetically. The A1C doesn’t see the difference. The patient lives it.
Continuous glucose monitoring closes that gap. A Libre sensor takes a reading every minute — around 1,400 readings a day. It shows your overnight pattern, how each meal hits you, what stress and poor sleep do to your numbers, and whether you’re spending most of your time in range or only some of it. Your physician gets the full picture, not the summary.
For people managing type 2 diabetes, prediabetes, or trying to understand how their body responds to food and lifestyle changes, this is one of the most consequential tools modern medicine has added in the last decade. It shifts diabetes care from quarterly check-ins to visible, real-time patterns — and lets us catch problems early instead of three months late.
Our program at a glance
As our CGM program grows, we plan to publish a quarterly de-identified snapshot of how our cohort is doing.
What we plan to publish
Time in Range (TIR)
The percentage of time your glucose sits between 3.9 and 10.0 mmol/L. The international consensus target is ≥70% for most adults with diabetes. Higher is better.
Mean glucose
The average of all readings, reported in mmol/L.
Estimated A1C (GMI)
A calculated estimate of A1C derived from CGM readings. It correlates with, but does not replace, a lab A1C.
Cohort at target
The percentage of our enrolled patients meeting the ≥70% TIR threshold.
How we’ll measure it
We exclude patients whose sensor was active less than 70% of the reporting period — partial data isn’t representative of a full 24/7 pattern, and this matches standard CGM-reporting practice. We don’t publish any figure when the included cohort is fewer than 20 patients. Individual results vary; the figures will reflect a self-selected group of patients who chose to use CGM and share their data with us. They are not a prediction of what your own results will look like — they’re a check on whether the program as a whole is doing what it should.
How to share your Libre data with us
This is the part of the page that matters operationally. If you wear a FreeStyle Libre — Libre 2 or Libre 3 — you can share your readings with us automatically through LibreView, Abbott’s free data-sharing platform. It takes about five minutes.
You’ll enter this in the Libre app at Step 4 below.
What you’ll need
- A phone with the FreeStyle Libre app (or Libre 3 app) already set up
- An active Libre sensor on your arm
- About five minutes
- The Practice ID above
Step 1 — Open the Libre app
Open the FreeStyle Libre app on your phone. Tap the menu icon in the top corner — three horizontal lines on Android, or the menu button on iPhone.
Step 2 — Find Connected Apps
In the menu, find Connected Apps and tap it. You’ll see a list of services your Libre data can connect to.
Step 3 — Connect to LibreView
Tap LibreView, then tap Connect.
If you don’t already have a LibreView account, the app will walk you through creating one. It takes about a minute and uses the same email address as your Libre app.
Step 4 — Add Ajax Harwood Clinic as your practice
Once LibreView is connected, scroll down in Connected Apps until you find the section for sharing with a healthcare practice.
Enter our Practice ID:
Confirm that Ajax Harwood Clinic appears on screen, then tap Share.
Step 5 — You’re done
Your sensor data will now upload to our LibreView account automatically each time your phone is online. We’ll review it at your next appointment.
You can disconnect at any time from the same Connected Apps menu — there’s no lock-in, and disconnecting stops new data from being shared.
If you get stuck
The Libre app’s menu names occasionally shift between versions. If anything looks different on your screen, call reception at 905-683-0690 and ask for help connecting your Libre. We can walk you through it over the phone, or your physician can help at your next visit.
Who this is for
CGM is most useful if you have type 2 diabetes on medication, type 1 diabetes, prediabetes you’re actively working to reverse, or unexplained symptoms that may be glucose-related. It’s also useful for patients on weight-loss medications or significant lifestyle change who want to see, week by week, how their body is responding.
If you’re already an AHC patient and you’re not sure whether CGM is right for you, bring it up at your next appointment. We’ll talk through whether it makes sense for your situation and walk you through the practical setup.
If you’re not yet rostered with AHC and you’re interested in this kind of care, our roster status changes periodically — call reception at 905-683-0690 to ask whether we’re currently accepting new patients.
What CGM is not
CGM is a tool, not a treatment. It doesn’t lower your blood sugar on its own — it shows you and your physician what’s actually happening so you can make better decisions together. It works best alongside the rest of your care: medications, food choices, movement, sleep, and the elements of health that affect glucose but aren’t strictly medical.
Sensors are also imperfect. Fingerstick checks remain the standard for confirming hypoglycaemia (lows under 4.0 mmol/L) and for confirming any sensor reading that doesn’t match how you feel. We’ll talk through the limits of CGM with you when you start.
Results vary between individuals. Any aggregate figures we publish on this page reflect our enrolled cohort — they aren’t a prediction of what your own numbers will look like.
The information on this page is for educational purposes and does not constitute medical advice. Individual treatment decisions should be made with your physician. Continuous glucose monitoring is a recognised clinical tool but is not appropriate for every patient — your physician will discuss whether it’s right for you. Last updated: 2026-05-21.