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: 1538
Latest Activity: 4 hours ago


Dexcom-specific links

Forum conversations about Dexcom

Blogs entries about Dexcom

Videos about Dexcom

Rich demos insertion of a G4 sensor- video

CGM-specific links

Members who use CGM

Forum conversations about CGM

Blog entries about CGM

Videos about CGM

Diabetes Forum

First Week with Dex G4

Started by LovetoHike 4 hours ago. 0 Replies

Survey - Is insurance covering your Dexcom device?

Started by mtulchin. Last reply by ANTONIA RETMAN 10 hours ago. 103 Replies

Blacking out

Started by Aussie. Last reply by Aussie yesterday. 7 Replies

ANY news on dexcom/Animas Vibe approval?

Started by Dan W.. Last reply by jjm335 on Thursday. 9 Replies

Charging Dexcom in car

Started by Andrea555. Last reply by SueSue on Wednesday. 3 Replies

Skin tac wipes

Started by dishers. Last reply by Suzan on Wednesday. 35 Replies

G4 arriving tomorrow! :)

Started by LovetoHike. Last reply by Biomuse on Tuesday. 13 Replies

Remove Workaround?

Started by Tripp Lewis. Last reply by Tripp Lewis Aug 18. 2 Replies

contemplating getting a cgm again

Started by ANTONIA RETMAN. Last reply by Bambi Aug 16. 11 Replies

CGM insurance

Started by Bailey. Last reply by dishers Aug 9. 12 Replies

Dexcom DM3 Software

Started by Mike W. Last reply by mohe0001 Aug 3. 16 Replies

New to Dexcom G4 and travel

Started by cbaer. Last reply by Brad Ringer Jul 30. 5 Replies

First sensor failure

Started by Linny. Last reply by 2hobbit1 Jul 30. 14 Replies

Comment Wall


You need to be a member of Dexcom Users to add comments!

Comment by Rickst29 on September 13, 2011 at 12:30am
Kati *, the battery assembly includes a "smart" charge control circuit. If you leave the Dexcom plugged into the charger all night, the charger itself will continue to put out 5 volts all night long- but after the battery has reached "full charge", the charge control circuit does an electronic disconnect.

You CAN'T hurt it.
Comment by Meda-Kay on September 12, 2011 at 9:07pm
I charge my every night on my bedside table while I sleep. I don't seem to have a problem with overcharging.
Comment by Andrew Tumsuden on September 12, 2011 at 9:01pm
dont worry about overcharging it... though yea 3 hours ive noticed usually fully charges it and the more the screen is lit up the faster the battery burns
Comment by karlye72 on September 12, 2011 at 8:42pm
I think it takes about 3 hours to charge. I just plug it in at night about every three days.
Comment by Kati * on September 12, 2011 at 7:26pm
Thanks :) quick question, how do you know when the Dexcom is fully charged? (I don't want to over charge it)
Comment by Meda-Kay on September 11, 2011 at 4:14pm
Congratulations on choosing a Dexcom and good luck for tomorrow as well as your setup. It will change your life as you know it. Love mine and wouldn't want to do without it. Though, I did have a learning curve. I was frustrated for a few months at first, but love it now.
Comment by Kati * on September 11, 2011 at 3:42pm
my dexcom is sitting at FedEX, I missed the delivery on Friday ...hoping all goes well and it will be here tmorrow :D
Comment by Sandy Palmer on August 30, 2011 at 1:09pm
I can sometimes shut the sensor down after getting the ??? over night and it will last me a few more days but it's a 50/50. To me though losing the night data is worth getting 3 more days out of it. Just your prefrence and coverage as well.
Comment by Allen on August 30, 2011 at 1:04pm
after 7-days the receiver will show a warning message and then turn off after a few (I think six) hours. you can stop the sensor and restart it (recalibrate after 2-hours) and use it until it fails. once it gets the ??? in my experience it is about to fail.I usually replace the sensor shortly after seeing the ???
Comment by Jazzy on August 30, 2011 at 11:51am
This may have been answered in other discussions, but I thought I'd ask anyway...

I'm on day# 10 of my sensor and I'm wondering if I should change the sensor now... Today my receiver has shown the ??? error 3 times. Now it has not lasted longer than 3 hours, but this time it's getting pretty close to the 3 hour mark.

My husband thought that because I was not following the "rules" of Dexcom I was having this problem, but I thought I'd ask the folks who normally wear their sensors beyond the "FDA Approved 7 days"...


Members (1538)




From the Diabetes Hands Foundation blog...

Diabetes Among Hispanics: We’re not all the same

US Hispanics are often portrayed in the press as a single, monolithic group. But anyone who has spent any time in San Francisco’s Mission District or the Bronx can tell you, we’re not all the same. Now we’re finding out Read on! →

Diabetes entre los hispanos: no somos todos iguales

Traducido por Mila Ferrer.    A menudo los Hispanos en Estados Unidos son retratados en la prensa como un solo grupo, monolítico. Pero cualquiera que haya pasado algún tiempo en el  Mission District de San Francisco o el Bronx se Read on! →

Diabetes Hands Foundation Team


Manny Hernandez
(Co-Founder, Editor, has LADA)

Emily Coles
(Head of Communities, has type 1)

Mila Ferrer
(EsTuDiabetes Community Manager, mother of a child with type 1)

Mike Lawson
(Head of Experience, has type 1)

Corinna Cornejo
(Development Manager, has type 2)

Desiree Johnson  (Administrative and Programs Assistant, has type 1)


Lead Administrator

Bradford (has type 1)


Lorraine (mother of type 1)
Marie B (has type 1)

Brian (bsc) (has type 2)

Gary (has type 2)

David (dns) (type 2)


LIKE us on Facebook

Spread the word


This website is certified by Health On the Net Foundation. Click to verify. This site complies with the HONcode standard for trustworthy health information: verify here.

© 2014   A community of people touched by diabetes, run by the Diabetes Hands Foundation.

Badges  |  Contact Us  |  Terms of Service