Information

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 (http://www.cr3diabetes.org), 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: 1532
Latest Activity: 53 minutes ago

OTHER RESOURCES ABOUT DEXCOM IN TUDIABETES

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

Remove Workaround?

Started by Tripp Lewis. Last reply by Tripp Lewis on Monday. 2 Replies

contemplating getting a cgm again

Started by ANTONIA RETMAN. Last reply by Bambi on Saturday. 11 Replies

Skin tac wipes

Started by dishers. Last reply by Parrformance Aug 13. 33 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

Acetaminophen's real effect?

Started by Scott Wilkins. Last reply by Suzan Jul 26. 7 Replies

Range of transmitter

Started by PhDiabetes. Last reply by Brad Ringer Jul 24. 5 Replies

Comment Wall

Comment

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

Comment by Rickst29 on January 24, 2012 at 6:29pm

Laura: it's BOTH. Minimed has an advantage in using the pump as the 'Receiver', it takes an everyday AA disposable. But their transmitter has the hassles of recharging, with much SHORTER lifespan than either of the Dexcom parts, and it costs a lot of money.

I'd recommend an entire new kit, because the Receiver battery is likely to wear out shortly after the Transmitter looses too much effective range. ("Receiver battery wears out" means that you're having to recharge it WAY to often; it can't hold enough energy after it gets "old".)

Comment by Laura on January 23, 2012 at 8:46am

Comment by Laura on January 23, 2012 at 8:46am

So you guys are saying - that the Dexcom itself, goes bad after 12-15 months or the gray transmitter goes bad? Or both? I certainly was never informed that I'd have to buy a New Dex within a year or so. Or a new transmitter. How much is a transmitter these days? Do they charge you the whole price of a totally new Dexcom?

Comment by Rickst29 on January 20, 2012 at 10:05pm

Doug: because the Transmitter is a fully-sealed device, it (supposedly) "can't" break in a way which exposes the battery.

But the Receiver... hmmm, IMO it IS suitable for hazardous waste disposal (the 'paid-for' kind, not the lazy 'we'll take the light bulbs and car batteries we sell' kind.

This is a Gel battery in foil (not in strong packaging) If the Receiver case breaks open when the garbage truck guys run their "trash-squisher" thingy, it can theoretically get torn open and leak.

Here's what I've done: I've simply never thrown away my old, dead ones. When my city GETS A CLUE!!! and implements a proper hazardous waste disposal, then I'll take them in -- all at once.

The battery in the Transmitter is probably very dangerous (maybe even to breathe fumes). But it won't get broken apart by regular trash handling, and the plastic will hold together for hundreds of years in a typical landfill. (in the desert, where I live, it probably won't leak for several THOUSAND years.) The Transmitter is breakable, under a lot of force, and would spill it's gel/fluid if the battery foil got torn. IMO, you should not let it get handled as regular trash.

Comment by Rickst29 on January 20, 2012 at 5:04pm

For Rascal Richard:
The FDA requires that prescription meds and DME "consumable supplies" have an expiration date. But, that can be as long as a year.

That's not the issue with the Sensors. Dexcom limits the "not guaranteed for use after" dates to 6 months, because the reagents do have some degradation over time. And that time is temperature dependent: In comparision to "normal" indoor temps, you can gain a couple more months by keeping them in a wine fridge, at 50-55F. But less than about 40F is WORSE for lifespan than room temperature. So a regular refrigerator isn't a great idea, unless you keep it well above freezing.

The date on the label isn't describing an "off like a LIGHT SWITCH" situation. Degradation occurs over time. Dexcom switched the time limit which THEY are willing to guarantee a few years ago- it used to be only 3 months.

Comment by Rickst29 on January 20, 2012 at 4:49pm

The Receiver contains a rechargeable battery. After 12-18 months of charge/discharge cycles, it can't accept (and hold) very much energy per charge cycle anymore. The battery wears out, just like a NiMH "AA" flashlight battery. (Although the battery in the Dexcom Reciever *is not* NiMH, it appears to be a type of Lithium Gel cell.)

The Transmitter contains a SINGLE-USE battery, with extremely high energy density. The chemicals are dangerous, so please don't go digging in there with a sledgehammer. I think that our use-once, never recharge 11-15 month battery is a far bettery deal than Minimed's rechargeable- which wears out, in the same way as the Dexcom RECEIVER, much faster. And the unit costs more.

The plastic Sensor pad contains nothing except the two contacts, and the carefully-built connection between those contacts and the Sensor wire. Go ahead and break one apart after you've used it, and you'll see that there isn't any room for a battery.

Even if I pretend that I'd never seen one before, you can figure it out from the simple fact that the Transmitter begins to loose range (effective distance) over time. If it was getting a fresh power supply with every new Sensor, that wouldn't happen!

Power is within the clip-in Transmitter itself, and the battery lasts a pretty long time.

Comment by Richard157 on January 20, 2012 at 3:27pm

Thanks Doug, Lauren and Mossdog!!

Comment by MossDog on January 20, 2012 at 1:01am

Doug:
Check out Dexcom's website. It says right on it the battery is in the receiver not the sensor. I have heard of people using the sensors a couple years old without a problem although that is a use at your own risk kind of thing. Also, you have to have lot numbers and what not to get a sensor replaced and all of that let's Dexcom know when the expiration date was so the warranty is void at that point anyway.

Comment by Lauren on January 19, 2012 at 4:01pm

To answer your question #2: I notice more of a difference when there is something (me) between the sensor and the receiver, not distance. I typically wear my sensors on the upper part of the back of my arm, and will carry the receiver either in the back pocket of my jeans or in my jacket pocket on the same side of my body. If I put it in the pockets on the other side, I'll get the ???. I have similar problems when I sleep: If I happen to roll over onto the sensor, the mattress is in the way so I'll get the ??? alarm. So I just roll over again and get off of it. I don't have to move the receiver any closer--just so nothing is between the two pieces. I hope that makes sense!

Comment by Richard157 on January 19, 2012 at 2:35pm

I have a few questions:

1.) The sensor I am using expired in late 2010, but it is working very well. So why is there an expiration date. Is it so they can sell more?

2.) When I have my receiver on one hip and the sensor is close to the other hip, then there is a bulge between them...my lower abdomen. The receiver displayed the ??? and I moved the receiver close to the sensor. It did not take very long for the ??? to vanish, and I started seeing accurate numbers again. I have to wear the receiver close to the sensor, and not have any interference between them. Is it the same for the rest of you?

3.) I am having to recharge every 2 or 3 days. I don't remember doing it that often in 2010. Why do you think this is necessary now. The system I am using is new, and I started using it just 6 days ago.

 

Members (1532)

 
 
 

Advertisement



REsources

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

DHF 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)


DHF VOLUNTEERS


Lead Administrator

Bradford (has type 1)


Administrators

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

Loading…

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