93 Responses

  1. Anonymous
    Anonymous August 1, 2013 at 8:22 am | | Reply

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  2. Andrew
    Andrew September 9, 2013 at 8:11 am | | Reply

    The G4 which I just started 5 weeks ago is great, much better in many ways than the Dexcom7 I had used for two years before that. So, I do agree with many of the points given in the review above. There is, however, one point that the G4 fails me with in comparing it with the Dexcom7 – its height. The actual overall sensor is larger and its height above the skin is almost 50% more. The reason for this is the battery inside that allows more power for the transmitter and allows a much better range.
    That height above skin causes the device to move when I exercize or do work – like crawling as I have to do to reach objects under the house or to tend plants in the garden. That occurs because there is a greater torque that tend to pulls the sensor off the skin. This did not occur with the old Dexcom 7.

    To stop this happening I place a Tegaderm patch over the entire sensor to prevent it from undergoing any motion. That works but causes a red rash and itchiness. I don’t think it is an allergic reaction – I don’t have any except fpor bee stings. It is caused, I believe by a slight tearing away from the skin as I move. In the first few weeks I was doing nothing physical and had no problems and no need for any Tegaderm. It was just great! But, now that I am back to my normal schedule with exercize and work the G4 is indirectly causing me grief. Boy,is it itchy!
    I really need advice on this. Dexcom, as always, have been very cooperative but said their hands were tied on providing any medical advice. I don’t think any med. advice is needed – it’s a mechanical, not a medical issue. I have tried a variety of tricks mentioned above but the skin under the patch remains itchy! Have you any other ideas?

  3. Dennis
    Dennis September 28, 2013 at 5:28 am | | Reply

    In theory- the CGM will Raise Awareness!
    and that’s a Good Thing! Or Is IT?

    But, Isn’t it Going to make People MORE PARANOYD!

  4. Lin
    Lin October 26, 2013 at 2:16 pm | | Reply

    Andrew, have you tried paper tape (also called surgical tape) brand i used is micropore 3m. anyways, i only tried it once, but it worked surprisingly well (since it’s paper tape you don’t think it will hold well) during exercise outside in FL heat. I put it like an X one sideways across the top, one vertical. I am going to experiment more, but the great thing is it doesn’t itch or no sweat as much which is how i got the rash with IV 3000. And if it gets old, you can change it easily unlike the tegaderm. i want to know other’s experiences trying it, i just came up with the idea randomly!

    1. Andrew
      Andrew December 28, 2013 at 10:28 am | | Reply

      Thank you for the suggestion, Lin. yes, the idea is good but, for the reasons below, it does not help. I have taken time to respond so that I could get all the facts worked out.
      I can now say that neither Tegaderm nor the paper tape are the cause of the rash. in fact, while it looks and behaves like a rash, it is not one. There is no chemical reaction with my skin (and indeed I do not suffer from allergies. What is happening is that there is a physical reaction that is taking place between the skin and the Tegaderm, paper tape or Dexcom anchor when I undergo exertion such as significant bending of my abdomen when I exercise. Applying either paper tape or Tegaderm to skin on a portion of the body that is not being bent causes no reddening. I think the physical reaction results from tiny hairs or skin follicles being pulled by something sticky (Tegaderm or paper tape).
      With the old Dexcom device this dd not happen. Why? Because it was half the height of the G4 transmitter. That increase really increases the lateral stresses when the body moves (as in bending, or when crawling).
      I spoke about all this with Dexcom and asked if I should move the sensor/transmitter to another area of the body. They said the abdomen should remain the place. But they had no other suggestions about fixing the problem.
      I did another test. After using a chainsaw to cut lumber there is quite a lot of sawdust produced. I checked the area of the device afterwards when I removed it from my skin due to irritation. Sure enough, some fine dust had penetrated under the Dexcom flap anchor. The same thing happened at the edges of a Tegaderm patch. The dust did not reach the sensor but it hastened the reddening around the edges of the patch and the area really became very irritated.
      The bottom line is – if you do real exercise watch out. With the G4 you may experience the reddening and skin irritation that I do. I have reported this to Dexcom and suggested they find a battery for the transmitter that has a lower profile – wider but lower.

  5. Julianm
    Julianm November 12, 2013 at 2:08 pm | | Reply

    Very disappointed that the transmittet is only good for 6 months. And I’m having one hell of time getting a replacement. Insurance has denied payment. NOT HAPPY!

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    Charlotte Roof Repair February 23, 2014 at 8:13 am | | Reply

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  8. Christie
    Christie March 13, 2014 at 8:31 pm | | Reply

    I am having some horrid (underline and BOLD horrid) reactions with this sensor adhesive and my skin. I am getting some awful looking welts and sore spots when I practically RIP it off my body. The sensors never even last for 7 days because the itching it so severe. Dexcom doesn’t seem to care about this problem because when I call, they just tell me they are not medical doctors and so cannot dispense advice. Crap. what is a person supposed to do?

  9. Sensao
    Sensao April 12, 2014 at 3:16 pm | | Reply

    I am having a terrible time getting info about price of meter, trasmmiter and sensors from the manufacturer. So I want to know if I can physically buy this in a store…..any comments?

    1. Lx
      Lx July 29, 2014 at 1:37 am | | Reply

      I found that ordering directly with Dexcom was my cheapest option. I was able to negotiate some discounts from their default prices. The default prices offered to me back in April were:

      $1,198 for the Receiver and Transmitter
      $349/box for the sensors (4 per box)

      Replacement Transmitters are $599 unless you sign up for at least 6 boxes of sensors for a year then the price comes down to $199 if you sign up for 9 boxes then your Transmitter replacement would be free.
      If you’re interested, I was also considering ordering from www(.)americandiabeteswholesale(.)com

      Most specifically:
      (above address)/product/dexcom-g4-platinum-continuous-glucose-monitor_7513.htm

  10. Ray
    Ray May 30, 2014 at 8:10 pm | | Reply

    Amazing! This blog looks exactly like my old one! It’s on a totally different topic but
    it has pretty much the same layout and design. Wonderful choice of colors!

  11. tonyb
    tonyb June 20, 2014 at 4:48 pm | | Reply

    Did you ever solve Mac connectivity? I am trying to set up Dexcom Studio to run on a Window VM on a Mac. But I can’t get the USB driver to work.

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    subs Pompano Beach August 12, 2014 at 8:47 pm | | Reply

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  13. Emily
    Emily September 17, 2014 at 5:51 pm | | Reply

    Please help. I’ve tried several things to get my dexcom to say on for more than 3 or 4 days. The latest is dexcom suggesting allkare wipes and tegaderm. I did everything right- allkare first but making a doughnut, cut a hole in the tegaderm and put it on top of the dexcom adhesive. It’s easy to cut a hole actually- just trace the old sensor when you remove it and fold the thing in half. Anyway, despite all this, it is still peeling off and it’s uncomfortable!! Hypafix also irritated me. The only thing actually helped was tincture of benzoin but there is no way I can use that again because I got a horrible blistery rash from it which was awful. I don’t know what to do- asked endocrinologist, diabetes educator, dexcom, even dermatologist. I like the dexcom but I hate when it starts to peel off.

    1. Robyn
      Robyn October 13, 2014 at 3:21 pm | | Reply

      I use a product called Opsite Flexifit (might be similar to tegaderm??) – it’s a very thin clear adhesive. It comes in a roll about 3 or 4″ wide. You need to cut a patch big enough from the roll (I do about a 4×4″ patch) and then cut a hold for the sensor. It sticks very well and is so thin it’s barely noticeable. It’s a bit pricey (I bought a box on Amazon for about $25) but the box lasts a long time. Good luck!

  14. John
    John December 11, 2014 at 8:19 am | | Reply

    I am an avid exerciser and have been a pump wearer for 25 years. I live in Fl and because of the heat and humidity I have always had a problem with adhesives, both for my pumps and my CGMs. Dexcom suggested Skin Tac and it has been fantastic. I agree that it creates a sticky finger issue, so I keep a cotton ball soaked in alcohol handy when changing insertion sets and transmitters.

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