I am due for a 90 supply of Dexcom sensors. I am on a TSlim Tandem pump. I requested the new 15 day Dexcom sensor but was told it has not yet been approved for use with the TSlim pump. I called Tandem to confirm and was told it was true and they did not know when it would be approved. I was anxious to try it but will have to wait.
Thanks for letting us know. I asked my Endo and he advised to wait and see what the results are; I concurred based on the small print Dexcom finding only about 75% of users get the full 15-days offered. That I recall, only one other person here on FUD has the 15-day variety. What say other’s? If you’re a G7 15-Day user, please let us all know your experience…good, bad, indifferent?
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My experience is here:
Bottom line was it was functional for 12 days, so no major gain over the 10.5 days I get from the current G7.10 and potentially lots of pain.
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I ordered them for my next shipment, which I should be getting around the end of the month - I will report back after I try one! Thankfully I’m MDI so don’t have to worry about pump compatibility.
Part of the reason I stopped using my Tandem pump was because the Dexcom G7 sensors were so erratic, it was negatively affecting the pump’s ability to function well. Life has been MUCH easier and smoother using Lantus & Fiasp!
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I am still using the G6 but recently received a message they will not be available after June 2026. My Endo recommended remaining with the G6 as other users in his practice were always reporting problems. I plan on moving to G7 10 day until insurance says I cannot use them or they discontinue them too. I have several reasons for this. 1 - the literature only shows a very slight increase in accuracy of the 15 day vs 10 day sensors. 2 - I find the adhesive tabs on the current G6 are generally ready to come off by day 10, and sometimes have to apply an over patch to achieve that. 3 - On occasion, I place a sensor in an area that is more tender or more likely to give compression lows and know I have to live with it for 10 days, but at least its not 15 days. 4 - the literature shows that the warmup time for the 10 day sensor is 30 minutes vs 60 minutes for the 15 day sensor (still, both are better than 2 hours) but I don’t like the extended warmup time. 5 - For me, the cost will be the same regardless of 2 per month or 3 per month.
I know the G6 was only approved for use on the abdomen. However, I found out that sensors placed there only lasted 7-8 days for me. After many replacements I decided to try the back of my arms and had much better success keeping them on for 10 days there and with improved accuracy and fewer signal losses.
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If you do it right, the warmup time is less than 5 minutes. Just insert the new G7-10day a half hour before you want to start using it, but don’t start it in the app. The old sensor will continue reporting BG. After the half hour has passed, you can start the new sensor and it will start reporting BG within 5 minutes because it already has been warming up for a half hour. Similarly, for the G7-15day put it in an hour before you want to start it in the app, and it will warm up all by itself while the old sensor keeps giving BG readings.
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I second @bkh’s method! I’ve been doing it like this for some time, using part of the grace period. Believe the 15-day version will allow the same thing, though would have to provide for an hour, vice 30 minutes. Have to admit this last G7 has had issues, time outs and sudden drops (20-50 pts) that correct on the next read (almost always at night so alarm wakes me up; almost swapped it out last night but wanted to sleep more!). Have enjoyed not having many issues for several months, hope its not a trend!
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What if I insert the new G7 (I don’t think 10 or 15 day matters) 12 hours before I want it to become “active”? Will it have been warming up for all of those 12 hours? (I think both 10 + 15 day G7s give you a 12 hour freebie?) I simply do not trust any Dexcom sensor to go into my body and immediately begin reporting correct numbers – I am guessing I will always need a half-day warm up (“soak”). Thanks - j
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Yes. Presoaking uses up some of the lifetime of the sensor, but for me it’s worth it to get past some of the worst portion of the sensor data.
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