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Dexcom Users

For users of a Dexcom Continuous Glucose Monitoring ("CGM") device

Just as a reminder with the recent release of the new Dexcom G4 to the US market--it is NOT okay to post about previous models or older sensors as being 'for sale' on this site.

It is a violation of the Terms of Use because it is a prescription device, and any such efforts will unfortunately be removed.

We encourage you to donate supplies to non-profits such as the Charles Ray III Diabetes Association (, which accepts unexpired glucometer and insulin pump supplies, or alternatively you may talk to your physician's office or other local medical group to discuss donating them to those in need of assistance.

Thank you all for kindly refraining from this activity.

Members: 1656
Latest Activity: 10 hours ago


Dexcom-specific links

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Rich demos insertion of a G4 sensor- video

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Diabetes Forum

Planning to try an arm site!

Started by Elena. Last reply by Ned 10 hours ago. 35 Replies

formr nav users any luck?

Started by peruvianpasohi. Last reply by Scott Wilkins 18 hours ago. 10 Replies

Can you calibrate to much?

Started by Sally. Last reply by niccolo 22 hours ago. 16 Replies

Dexcom share?

Started by Alyssa. Last reply by mikep yesterday. 5 Replies

Sensor Placements

Started by Denise. Last reply by PeggyEllen on Sunday. 24 Replies

Freestyle Libre CGM

Started by Linny. Last reply by Terry Apr 3. 15 Replies

How to make sensor last longer?

Started by catluvr. Last reply by FatCatAnna Apr 1. 13 Replies

Could my transmitter be bad?

Started by Susan Van Abs. Last reply by Susan Van Abs Mar 31. 10 Replies

Dexcom share Canada

Started by dishers. Last reply by FatCatAnna Mar 22. 5 Replies

2 calibrations, or one?

Started by Lawdawgz. Last reply by Seth Mar 22. 13 Replies

New Dexcom wearer

Started by dalajosa. Last reply by Terry Mar 21. 13 Replies

Calibration Issues

Started by Denise. Last reply by CC Mar 20. 4 Replies

Possible adhesive allergy

Started by Susan Van Abs. Last reply by Susan Van Abs Mar 20. 13 Replies

Actual Life of the G4 Receiver

Started by Bob Martin. Last reply by ChrisG Mar 17. 18 Replies

Comment Wall


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Comment by willne1 on March 27, 2015 at 3:29pm

Yep...Lawdawgz, bought some of that tape and I've been using this video myself for a while now. Works Great!

Comment by Lawdawgz on March 27, 2015 at 7:36am

Thanks to auto-correct, my comment below makes no sense!

Here is a great video to solve the 'adhesive problem,' for those who want to use a sensor as long as possible:

Comment by Lawdawgz on March 13, 2015 at 11:19am


In terms of adhesive, I agree that the adhesive that the minimum gives is the best. I've gone i the hot plenty of time with that.

The problem is that they only 'provide' the adhesive WITH the sensors.

I once called them and asked for more of just the adhesive, and they said they don't sell it separately.

Anyone know anything different on this issue?

Comment by Natalie ._c- on January 24, 2015 at 11:38am

CC: ADORABLE dachsie!! I have 2. :-)
Janet-G: good to know that Medtronic will sell supplies even if you don't use their products. There's a tape I want that covers my infusion set, that no one else sells, and this means maybe I can get it from them! :-)

Comment by CC on January 23, 2015 at 2:49pm

Niccolo, I have adherence problems as well but mine is from too much perspiration. I purchased 2 different tapes( Hypafix & Opsite Flexifix)from Amazon. They were more economical than Tegaderm. I didn't know which one would work better for me. After 6 months of usage, I found that the Hypafix is better as it seems to "breathe" and moisture does not collect beneath it like it does with the non-porous tape (Opsite Flexifix.) It is cloth-like very similar to the adhesive that the Dexcom has. Don't let that be a deterrent though.

Here's what I do: (1)put on the Dexcom; (2) wait 1 hour (I don't even start the Dex until after the 1 hour at the recommendation of a Dexcom tech);(3) apply Skin Tac to the Dexcom's adhesive base (just put it on top of the cloth as it soaks in down to the skin);(4)then I apply Skin Tac to the skin area where I am going to place the Hypafix; (5)wait about 3-5 minutes for the Skin Tac to dry a little; (6) while waiting, I cut the Hypafix to the desired size(I usually make it 4-5 inches wide) & I cut out a hole in the center using an old plastic sensor base as the template);(7)take the back tape off the top first and apply the Hypafix to the skin, so that the Dexcom is not covered by the Hypafix (I make the hole a little smaller than the template so that the Hypafix will cover the edges of the Dexcom); (8) as the days progress and I notice that an edge may be coming loose, I apply more Skin Tac.

I have been able to get 14-21 days worth of wear doing this. However, I use my lower abdomen as my site. I do heavy gardening and thus far the Dexcom has stayed on. Since you're swimming and moving/stretching all your muscles a lot, you might have more adherence issues than most users do.

Good luck and let us know how things work out for you. I know that you have been searching for the right solution for a while. Don't give up. Something has got to work even if it's a combination of several of the good suggestions that you have received from the folks here.

Comment by CC on January 23, 2015 at 2:22pm

Comment by Janet-G on January 23, 2015 at 2:08pm

Niccolo: I getthe tegaderm when Medtronic sends my supplies. I started receiving the tape because I once used the enlite but stopped and changed to the Dex. I'm glad that Medtronic continues to send the tape even though I don't use the tape for their products.

Comment by A. Kelsey Metcalf on January 23, 2015 at 2:06pm
Right. You have to buy it yourself separately. Dexcom does not provide it and usually insurance does not cover it.
Comment by Lilli on January 23, 2015 at 2:05pm
No Dexcom doesn't supply them, we get them ourselves. I ordered mine from Amazon but you can probably get them at a medical supply too.
Comment by niccolo on January 23, 2015 at 1:58pm

It's my impression that some of you get extra supplies, like Tegaderm, that help the Dexcom sensors stick better, from Dexcom with your sensor shipments. I'm having adhesion issues, because I'm a swimmer and the adhesive only makes it through two swims before it's toast. I contacted Dexcom, and they claim they don't provide such supplies to anyone, all they can do is tell me the names of four different tapes they recommend, and I'm on my own to locate and purchase those. Do others have different experiences?


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From the Diabetes Hands Foundation blog...

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