Extending a Medtronic Guardian Sensor

There's no doubt that CGMs are amazing, but unfortunately they are also mind-blowingly expensive. In Germany, one box of five (5) sensors costs 349.50 EURO. That's 69.90 Euro per sensor that only lasts six days. Anyway, one box of five is a one month supply – and that's if you're lucky and ALL sensors set correctly and are accurate for the full six days. 

Even though my insurance covers 100% of the costs of my CGM, I still want to extend the use of my sensors each time in order to build stock. With that being said, the sensors are recommended and only approved for six days of use. 

Here's how I extend the life of my sensors: 

1. Once the six days are up on my sensor, I let the pump tell me the sensor is finished. 
2.  Very carefully, as to not disturb the actual sensor area, I separate the transmitter (clam shell) from the sensor port. The first time I did this, I separated them by a few milliliters. Recently, I've only had to slightly separate and then reconnect. 
3. Green lights should start flashing on the transmitter (clam shell) 
4. Tell the pump that you're starting a NEW SENSOR
5. Wait for the warm up to complete and calibrate as directed

That's it. Depending on the battery life of the transmitter, I don't even need to recharge it before starting a "new" sensor. The longest I've used a Guardian sensor so far is 11 days. I am confident it could have been longer, but I decided to change it for other reasons. 

Do you use your sensors longer than six days? What techniques do you use? 


4 comments

  1. Wait your insurance covers your CGM 100%
    Do you put tape over your transmitter? I tried but then can’t remove the transmitter to charge

    Like

    • Yes, mine is 100% covered in Germany. They healthcare system is truly amazing. And yes, I use two pieces of the tape that it comes with. I don’t remove mine to charge until I get to the second reset on day 12. Mine has 70%+ battery left for the first reset so I don’t bother to take it off, just slightly disconnected like I wrote.

      Liked by 1 person

  2. Thanks for the info. I just switched to a new Minimed pump and from the Dexcom CGM system. I used to get up to three weeks with the Dexcom sensors – also very easy to restart. Sure could use a way to extend the guardian sensors.

    Like

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