This blog post was originally published on Hugging the Cactus on February 26, 2021. I’m sharing it again today because I see folks trying new Dexcom sites all the time, usually with a lot of success! I thought it was worth it to share my experience with the forearm site because it was the polar opposite of a win for me – read on to learn why.

I don’t usually regret trying new sites for my Dexcom and OmniPod.

But recently, I discovered the one area that I wish I hadn’t tried…and that is my forearm.

For a couple years now, I’ve seen forearm Dexcom sites all across social media. People lauded the location for how comfortable it is and the accurate readings it produces, so I figured, why not give it a shot? (LOL diabetes humor.)

Plus, I wanted to give my stomach and the backs of my arms a break. I put both pods and sensors in those locations and while I like them a lot, I’m wary of scar tissue building up.

So with little fanfare, I tried putting my Dexcom on my left forearm (my non-dominant arm). And I knew immediately after hitting the orange button to insert the sensor that it was a bad choice because it STUNG. It stung something fierce! I remember wincing the moment it pierced my skin, and fortunately, the pain did go away…but resurged with a vengeance about half the time I made any arm motions. It didn’t matter if I was flexing it up or down or twisting it to reach for something – any movement could trigger varying degrees of pain. Nothing incredibly intolerable, but enough to make this site uncomfortable.

And this pain didn’t altogether disappear one day: I still felt stings 24 hours after I put the sensor on. Maybe I hit precisely the wrong spot (I noticed a very small amount of blood discoloring the white adhesive of the sensor), but I asked the diabetes online community and it seems that the general consensus is that this location sucks. The half-dozen or so people who messaged me said that either the pain was too much and they took the sensor off early, or they toughed it out for a full 10 days and never used the site again.

What’s more is that this site wasn’t as out-of-the-way as I wanted it to be. I roll up my sleeves dozens of times each day for different tasks, and each time I went to roll up my left sleeve, I had to go about it gingerly so I didn’t risk bumping into the site and prompting ripples of pain. This was straight-up annoying because my diabetes devices don’t usually inhibit my movements so much.

The one plus-side of trying the new site, and the only thing that motivated me to keep it on for the full 10 days, is that it was just as accurate as any other Dexcom site I’ve tried. My readings matched up pretty closely with how I felt and with what my blood sugar meter reported, so that was a saving grace. And I have to admit that even though I was worried that sleep would be impossible with the sensor in such a tender spot, it really didn’t interfere with my slumbers, which was a relief.

All in all, though, the accuracy wasn’t enough to convince me to want to keep forearm sites in my regular rotation. I’ll stick with abdomen and upper arm sites for now, with the occasional thigh site to further prevent scar tissue.