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.

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Diabetes Forum

Dexcom G4 accuracy ,hypo and rebound.

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Comment Wall


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Comment by Jay on October 22, 2011 at 9:06pm
Dexcom is a ware of this and they REFUSE to work with MACs. They also REFUSE to work with DiaSend. I do not know if the problem is Dexcom or FDA (Fools, Dummies and A.... ).
Comment by Carolyn A. on October 22, 2011 at 8:35pm
I am so amazed the software doesn't work on my MAC. Yikes what a pain.
Comment by jrtpup on October 22, 2011 at 11:46am
Thanks Luca, I think :(
Comment by Luca Bertagnolio on October 22, 2011 at 11:38am
Unfortunately there is no way to do that. Been there, tried everything, no luck. Even by fiddling with the data it won't work, as there is a level of encryption used to provide anti-tampering to the data.

You'll have to create a new profile and start with fresh data.

Ciao, Luca
Comment by jrtpup on October 21, 2011 at 10:38pm
I've asked previously, elsewhere, but never got a solution.

Can anyone figure out how to merge the databases from 2 different receivers? When I called Dexcom they said it's not possible. The person I spoke with didn't even know where to find the dbs or what type they are. Any help appreciated!
Comment by Heather on October 19, 2011 at 6:38pm
I put a sensor in my arm last night and it is working fabulously! Thanks everyone!
Comment by jrtpup on October 18, 2011 at 5:03pm
You guys inspired me. Just changed my sensor today and used my arm for the first time. Seth, thanks for the video. I ended up with it mid-arm towards the inside - so far, so good. Readings are awesome already.
Comment by Heather on October 18, 2011 at 11:48am
Thank you so much! I will have to go ahead and try the arm and thigh. Thank you Lisa C and Manoah!
Comment by manoah on October 18, 2011 at 2:55am
Comment by lisa c on October 18, 2011 at 2:40am
I have used on my upper thigh( quad area) and had good result. the back of arm ( tricep) did not work for me as I am a swimmer and it went bad after 4-5 days. Probably too much movement? Also difficult to do on ones own. Find a loving assistant for arm.

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DHF receives $200,000 grant from Novo Nordisk

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