# Which would you change....Dexcom G5 runs 40 points low **URL:** \ **Category:** New T1/LADA\ **Created:** [January 15, 2019, 9:01pm UTC](https://forum.fudiabetes.org/t/which-would-you-change-dexcom-g5-runs-40-points-low/6126 "2019-01-15T21:01:43Z")\ **Posts on this page:** 1\ **Showing post:** 47
**Author:** ![T1Allison](https://avatars.discourse-cdn.com/v4/letter/t/c77e96/32.png) [@T1Allison](https://forum.fudiabetes.org/u/T1Allison)\ **Post date:** [January 26, 2019, 12:56am UTC](https://forum.fudiabetes.org/t/which-would-you-change-dexcom-g5-runs-40-points-low/6126/47 "2019-01-26T00:56:04Z")
> [@Thomas](#): > > it might be worth to closely examine the sensor. The sensor should always be examined as standard practice to ensure the entire wire (ie - the fine tip of the sensor) is removed (for safety sake). I’m in the habit of giving it a cursory check over after removal (generally look to see if it is bloody or bent), but I’ll start checking it more carefully. > [@Thomas](#): > > IMHO the transmitter either works or does not work. There is no in-between. Strictly my opinion. I hear ya. I guess I’m unclear on what is defined as a “transmitter failure” under this thread: > [@Stockpiling Dexcom G5 transmitters: how long do they last?](https://forum.fudiabetes.org/t/stockpiling-dexcom-g5-transmitters-how-long-do-they-last/3361/13): > > @kmichel, @bkh, after re-reading my notes, this is what I got from Dexcom when discussing with them in the past couple of months as I was preparing for our long Euro trip: the transmitter must be shipped to the customer within 8 months of the Manufacture By date (the date next to the factory icon on the box). The Ship By date is indicated on the box as SB the transmitter MUST be started by the customer within 5 months of ship date. If there is any debates on that, Dexcom goes by the date … Is a failure a transmitter that dies? Or is a failure a sustained performance failure wherein it will not stay within 20% of fingerstick? I’ve been fortunate enough to get a bit of a cushion on G5 transmitters. But the thing is that when I get to activating one, it’s older than a freshly received one. I’ve noticed before decreased performance in the last month with some of my transmitters. And then when I start a new one, the issues seem to disappear for a while. Maybe I’m wrong on that, but I believe I have concluded this at least once before…whether or not I’m correct is another story. It’s hard to know what to conclude on a lot of these things. Stuff either works or it doesn’t…but tracking down the real cause is tricky. > [@Thomas](#): > > Also - When changing the sensor out, are you careful to always wipe down the underside of the transmitter with an alcohol wipe? Yup. Always. --- _[View the full topic](https://forum.fudiabetes.org/t/which-would-you-change-dexcom-g5-runs-40-points-low/6126)._