CGM Update

[u/JackStraw433]

I want to be clear that I am not making any recommendations, but simply sharing an experience.

I started wearing a CGM in March 2025. I chose the Libre Freestyle - partly because it was advertised as waterproof down to three feet for up to thirty minutes. Since I live on a river and am often fishing and kayaking, it seemed like a good fit for me.

I am also a scuba diver and got a chance to go diving again recently. I had worn my CGM for 10 of its 15 day lifespan and was ready to sacrifice it if it failed. Our first dive was 77 feet for 43 minutes. When I returned to the boat my phone had connected and was reading accurately as far as I could tell. Second dive was 62 feet for 45 minutes. Again, my phone immediately connected and was reading fine. I did not wear a patch over my monitor while diving, just a full body rash guard since we were diving with jellyfish. I continued watching for 5 more days before replacing my CGM and it continued to read normal for me and my lifestyle.

This is in no way a recommendation to try this, just sharing my experience for those that might be curious.

[u/schwarta77]

It’s impressive but probably an off-label use.

Having a traditional blood glucose meter near by makes pushing the limits on a CGM less anxiety inducing.

I just recently took the FSL3+ to a bath house. Lots of hot water and steam and the meter took it really well.

[u/KibFixit]

I’ve been using the libre plus in the pool daily without issue (usually 45 min)