Jul 1 tomorrow - which Dexcom CGM will you switch to, G7 10 day or G7 15 day?

I’ve read many of you have had issues with G7 15 day be inaccurate but they were in older threads. Is this still the case? Which will you be switching to? I have an endo appt coming up in Jul and will ask here opinion, but I’d like to get FuD members’ opinions!! Thank you! I’m still on G6 and still have a few G6 sensors and transmitter before I need to switch.

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7-day. No choice. I hear G8 will be out next year and we can do 15-day once that happens. FDA didn’t focus on getting testing or approval for the G7 for people under 18; rather, the G8.

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Which is 7 day? Does Liam’s sensors only last 7 days?

I’ll post what my endo recommends but if 15 day is actually as accurate as the G6 and doesn’t drop connections I’ll go with it!!

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Our endo just told us she’s getting lots of complaints about the 15-day. Sorry, the other one for those not over 18 is the 10-day, I think. She says she’s had loss complaints over the one Liam has to use, than The 15-day which he isn’t approved to use.

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Liam is currently on the G6 which is 10 days.

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My response is somewhere. The G15 only lasts 12 days for me, the G10 lasts 9 days. In fact, with some risk to my health, I can stretch a G10 to the full 10 days and that is what I do. There is no way I could stretch a G15 to 15 days; this is based on my use of two G15 samples provided by my endo.

I did the math; I can get my insurance (Medicare) to pay for three G10s a “month” (kinda 25 days or so depending) or I could get my insurance (Medicare) to pay for two G15s a “month”; same 25 days. Divide 25 by 12. Nope. I’ve got the G10. I am prepared to put up with Dexcom and ream Medicare to cover the lossage but, quite frankly, cheating the People (Medicare) to pay for a Corporation (Dexcom’s) inadequacies does not appeal. The G15 just makes it worse.

Oh, of course, Dexcom will replace 3 sensors a year without question. Then (see a recent thread) they start to get upset. 3 sensors a year for the G10 is 8%, consistent with their acknowledged 5% failure rate. If I didn’t believe that different people have different results I would think that was fine.

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I’ve been using the 15-day sensors for over a month now (3 insertions) and have been happy! The only thing is I’ve needed to use the overpatch, when I didn’t before. I have put it on around day 10 and that’s held me.

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Thanks, everyone, for your feedback! My insurance is Cigna so I guess I should check on their support, too! I’ll check with my endo to see how easy it is to switch prescriptions, too, between G15 and G10 if needed!

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I’m on the G7 (10 day). I’ve discussed with my Endo who has a couple of patients using G7 (15 day), their experience is mixed. He recommended, and I concur, with staying with the Dexcom G7 (10 day). We considered the data: 1) the Dexcom stats themselves only indicate about 76% get the 15 days advertised, the other 24% get less;
2) His patient experience with the G7 (15 day) is mixed as to duration achieved (seems to confirm #1 above);
3) I’m having relatively good results with G7 (10 day) ref accuracy and duration.
4) About the only positive for the G7 (15 day) is the waste stream is cut by about 33%, if I achieve the extended time.
5) There is no cost differential to consider (my understanding is the cost is the same)
6) My insurance (Medicare/Tricare) covers most of the cost (Medicare), but I get long term meds/devices at a Tricare pharmacy and Tricare doesn’t cover the G7 (15 day), so is it worth establishing yet another method of meeting my needs?

For me, it doesn’t make a lot of sense to upset the apple cart.
(Editted to include the “n’t” in “doesn’t”; sorry if I caused confusion!)

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Thanks for these stats. I wasn’t aware of these numbers. I wouldn’t care for the frustration of not knowing when I have to change a sensor! With G6, it is rare not to get the full 10 days but the last day can become unreliable both in accuracy and adhesion. The G7 10 day might be best for me as well.

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Agree with all of this. I was a relatively early G7 adopter and I’m definitely sticking with the 10-day. I’m not at all impressed with Dexcom’s claims that the 15-day version will make it the full duration.

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I haven’t asked my diabetes care manager about G7 10 days versus 15 days, but I used to have problems (several years ago) with my Medtronic sensors lasting their full 7 days in about 1/3 of my sensors. I got very, very, very, very tired of calling tech support and having the same conversations over and over again. They were polite and helpful, but it gets really old really fast. If they fail that often, I’d rather stick with the 10 day sensors.

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I believe the most important point to understand is that our experiences differ; YDMMV. I’ve read countless posts from people using the Dexcom G6 and saying how long they can run it with restarts and I’ve seen even more from people complaining that the G7 can’t be restarted; all these posters might care to try the G15 because they will probably get 15 days from it.

For those of us who find 10 days challenging on the G10 the opposite is true.

There are some people who might feel caught in the middle; no problems with 10 days most of the time (in fact I guess I’m in that group). Changing to the G15 might break the camel’s back.

I believe that everyone should suck it to see; get an endo sample (at least one, my endo gave me two). Try it. If you get 30 days with no problems and, particularly, if you never had problems on Day 10 of the G10, it’s probably a good bet. If you do not manage 15 days why break something that works?

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My Dr gave me one G15 so I will try it but one trial doesn’t mean much! I trialed 3 G7 sensors before the 15 day release. First 2 were useless. 3rd one worked “satisfactory” but not seamless, inaccurate day 1+.

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Thanks! Good points. I should talk to my diabetes care manager about my options in terms of moving from one to the other, or moving back if I don’t like it.

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I think K was also an early G7 adopter. He is using 10-day sensors. More than half the sensors don’t make it through the 10-day period. So he was not comfortable switching to the 15-day sensor, but he is considering it (it would also be nice to carry fewer sensors when traveling IF they really last longer).

FYI He typically asks for replacements only if the sensors don’t last for most of the expected duration. When they fail on day 9, he figures the extra sensors he gets as replacements make it up.

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I’ve been using the Libre 3 15 day been pretty good for four years. Now, using with the twist AID.

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This is solely my own opinion and in no regard should be regarded as true, but I can’t run a Dexcom 10 day sensor to 12 days and I can only run a 15 day sensor to around 12 days. The G10 fails after 10.5 days, invariably, really weird, I don’t understand that; it is always exactly 10.5 days, 252 hours, 15120 minutes. I don’t understand that at all but, of course, I don’t understand much.

Maybe the G15 is just the G10 with the 252 hour bug fixed?

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I was offered the option of staying with the G6 for a while and will stick with “the devil I know” for a while since I am dealing with a lot of other stressful stuff right now.

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@CatLady may I ask how you were offered that option? I’ve been getting the July 1 notices on my Dexcom app, but have some G6 sensors and transmitters squirreled away and it looks like one more shipment of G6s has shipped this week from Carelon, my mail order pharmacy. I would also much prefer sticking with G6 for now if possible. Thanks for any advice!!

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