Diabetes Self-Management Blog

On October 5, the US Food and Drug Administration (FDA) announced the approval of the Dexcom G4 Platinum continuous glucose monitor (CGM), a fourth-generation device that builds on the technology of Dexcom’s previous CGMs.

The Dexcom G4 Platinum is composed of a sensor, a transmitter, and a monitor. The sensor, which is approximately the diameter of a human hair, is inserted under the skin of the abdomen, where it continuously monitors the glucose level of the interstitial fluid (the fluid between cells). These values are sent to the monitor via the transmitter every five minutes for up to seven consecutive days.

New features available on the Dexcom G4 Platinum include a sensor diameter that is 60% smaller, a 19% improvement in overall accuracy and a 30% improvement in accuracy when glucose levels are in the low range (less than 70 mg/dl), an option to set hypoglycemia (low blood glucose) alerts as low as 55 mg/dl, a sensor transmission range of up to 20 feet (compared to 5 feet in the previous CGM), customizable alerts with different tones, and a color LCD screen.

The LCD display screen shows a real-time graph of glucose patterns, including arrows indicating whether glucose levels are trending up or down and how fast they are changing.

“Improved accuracy in the critical hypoglycemic range is most important from a life-saving point of view. The Dexcom G4 PLATINUM fulfills the promise of CGM for people with diabetes by providing accurate and reliable real-time performance,” according to Dexcom CEO Terrance H. Gregg.

As noted in the Dexcom press release, the device is “covered by most insurance plans for people taking insulin.” The Dexcom G5 Platinum, which is available for order immediately, costs $1,198 for a starter kit before insurance, and a four-pack of sensors will cost $349. People who need assistance navigating the purchasing process can contact Dexcom at (888) 738-3646 for more information.

According to an article on Diabetes Mine, people who purchased a Dexcom CGM between September 1, 2012, and October 5, 2012, will be eligible for a free upgrade to the new device. Those who purchase a Dexcom CGM before August 31, 2012, that is still under warranty is eligible to upgrade for a one-time payment of $399.

To learn more about the Dexcom G4 Platinum continuous glucose monitor, read the FDA’s overview or see the Dexcom Web site (which includes a downloadable video tutorial illustrating how the device works).


  1. Hello, Diane.
    I’m from Brazil and father of a diabetic girl. I’m very interested in Dexcom G4. Do you know is the buying proccess? Where is it available in US? Is a prescription really needed (I mean, the sellers in fact ask for the prescription to sell it?).

    Thanks for any information.

    Posted by Alexandre |
  2. I welcome the advent of Dexcom G4 CGM device which is a good news to the people with DM. I want to know that if the Dexcom has any distributor in India? Or how can people in india can get it?

    I also want to know if the kit also contains the insulin pump…or it has to be purchased in separate.

    Posted by Dr Nihar Ranjan Ray |
  3. Hi
    I’m from brazil and have diabetes type 1 for 16 years..
    I’m really interested about dexcom.
    Do you know if it’s easy to by it? do I nedd prescription??
    I’ll be travelling to europe and USA this year… do you know if its possible to buy it??

    Posted by roberta |
  4. I am a 65 year old Canadian male Type 2 diabetic who has been taking insulin after each meal for approx. 15 years.
    My main concern is that my level of activity is not regular and my blood sugar level can now drop to 1.8 mmol/L (Canadian version) without my necessary crucial awareness of the problem. The Dexcom G4 Platinum appears to be best in a very small field of CCM’s.
    I would appreciate any further information that you could provide re:availability in Canada, price, etc.
    Fred C.

    Posted by Fred C. Clement |
  5. I am father of a diabetic girl with 10 years old living in Brasil. Could you give me further informations about the buying process from abroad, Is that possible ? in a negative case, Wher in the US can I find it ?


    Posted by Marcos Degolacao |
  6. I’m from Brazil and mother of a diabetic girl. I’m very interested in Dexcom G4. Do you know how is the buying proccess for my country? Where is it available in US? Is a prescription really needed (I mean, the sellers in fact ask for the prescription to sell it?).

    Thanks for any information.

    Posted by Carla |
  7. Hi Dexcom, are you available in India, I would like one system for my father who is extremely brittle with his sugars. Please contact me.

    Posted by Azeem kathawala |
  8. Dear Indians,

    Dexcom has finalized the distributor in India. Distributor has filed the paper for legal approval to sell the product in India. He is waiting for the approvals and they are expected any time. After approval he can sell the product in India. Although I am skeptic about its price. Buying from US would be cheaper I guess.

    Posted by Pawan |
  9. I have come to know about the convenience of monitoring blood sugars every movement.please inform how to get it .price and any other maintenance costs please

    Posted by sravankumar |
  10. I’m from India and father of a diabetic son. I’m very interested in Dexcom G4. Do you know what is the buying proccess for someone on india, if i can buy in india or not yet? If not where is it available in US is i ask someone to buy for me from US? Is a prescription really needed (I mean, the sellers in fact ask for the prescription to sell it?).

    Also sensor needs to be changed every 7 days, so how do i do it, i need to order from us everytime? or can i buy them in India?

    Thanks for any information

    Posted by Amit Gor |

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