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» » Extending life time of your Dexcom sensors

Extending life time of your Dexcom sensors

Extending life time of your Dexcom sensors


According to Dexcom, their sensors may last up to 7 days. Through trials and errors, I discovered one solution that may extend life of your sensors.
I tried many options, including putting some sticky adhesive on my skin before installing the sensor, drying the sensor after shower, etc.

I decided to use Opsite Flexifix Waterproof Transparent Film Dressing. It didn't work first time because I went with a 2 inch version, which was too small for the use. It was only two millimeters bigger than the original dressing that comes with the sensor, so once water gets to the original dressing, there is no purpose in the Opsite film dressing.

I went with 4in x 11yd Opsite film dressing. You can get that one for only $25 or $30. I had sensors on me over 2 weeks and film dressing never came off.

So today I will show you how to prepare the dressing film to make sure it stays on you for as long as possible.

Extending life time of your Dexcom sensors


First, the items you will need are
* Opsite Flexifix Waterproof Transparent Film Dressing 4in x 11yd
* Sharp knife
* Piece of cardboard
* Marker
* Scissors
* Used sensor and transmitter (transmitter is optional)

Extending life time of your Dexcom sensors


Extending life time of your Dexcom sensors


Extending life time of your Dexcom sensors


Now let's get down to business. First thing you need to do is prep the cardboard box so that it can be used as a template later. I made my template cardboard 4 inch long and little over 2 inch tall. The reason I wanted it to be taller was so that Opsite film dressing will be able to cover more skin, making the sensor last longer.

Extending life time of your Dexcom sensors


Once you made a rectangular cardboard, align your used sensor right in the middle of the cardboard. You can cut off existing film dressing on that sensor to make the alignment easier.

Extending life time of your Dexcom sensors


Make needed markings and then cut a hole with your knife. That is it, now you have a nice template cardboard.

Extending life time of your Dexcom sensors


Extending life time of your Dexcom sensors


Then you use scissors to cut out pieces of the Opsite Film Dressing. Put one piece under your new template and make a hole with your knife. Pry open the hole.

Extending life time of your Dexcom sensors


Then you can modify the edges, making your film dressing with round edges.

Extending life time of your Dexcom sensors


Extending life time of your Dexcom sensors


Extending life time of your Dexcom sensors


You are all set. So far I never had the dressing come off earlier. The sensor should last week and a half or longer, but every sensor and sensor placement is different, so there is no guarantee that the sensor will last longer, although from my experience it did.

Do this at your own risk.

I also included video to show you step by step how I did it.

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