When I was first diagnosed with Type 1 diabetes, learning to live with a CGM was one of the biggest adjustments. Like many, I began by following the manufacturer’s recommendation to wear it on the back of my upper arm—usually my left. While this location is commonly used and generally provides reliable readings, I’ve often found it gets knocked or rubbed off, especially during sleep or exercise.

That’s why I’ve recently started experimenting with different CGM placement sites. The key, of course, is ensuring accuracy and comfort while avoiding interference in daily activities.

Here are my top three positions for CGM placement based on personal experience and feedback from others in the diabetes community:

1. Upper Arm (Back of Arm) This is the standard and most commonly recommended site. It usually gives consistent readings and is easy to apply. However, it’s also the most exposed, which can lead to accidental dislodging—especially for active people.

2. Upper Chest (Just below the collarbone) This has recently become my favourite. It’s discreet, comfortable while sleeping, and hasn’t affected the sensor’s accuracy at all. Plus, it’s far less likely to be bumped or pulled by clothing or bags.

3. Lower Back (Above the hips) This area tends to be well protected and is a popular off-label site for some users. While it may be trickier to apply yourself, many find it a good option for avoiding friction and keeping the sensor secure.

Always consult your healthcare team before using off-label sites, and remember that different bodies respond differently—what works for me might not work for you.

The bottom line? Finding the right CGM placement is about comfort, practicality, and accuracy. If you’re constantly knocking your sensor or finding it uncomfortable, don’t be afraid to try new locations (with proper guidance). Little tweaks like this can make life with diabetes that bit easier—and more comfortable!