A bit of history here:
When the G5 first came out, I took advantage of Dexcom’s “we’ll give you a free upgrade kit” offer. Fortunately I did NOT update my receiver and chose to evaluate the system with just an iPod Touch.
The system, compared to the G4, was absolutely horrendous:
- Frequent missed readings, even at a range of 3 feet. The G4 worked with the receiver almost anywhere in my apartment.
- No capability to backfill missed readings from the transmitter, which made issue 1 far bigger than it should have been. Compare to xDrip+ combined with a Share receiver - while the receiver couldn’t backfill from the transmitter, it almost needed to, but the mobile app could at least backfill from the Share unit. (In numerous cases at my old job, I was allowed to have the receiver with me but NOT a phone for security reasons - the receiver was only allowed due to medical device/safety of life exemptions from DoD policy.)
- At that point, all indications the xDrip team had seen was that the G5 transmitter didn’t support raw BG numbers and/or “noise” status. While it’s never been a part of official Dexcom implementations, I consider it absolutely critical as it lets you know when the sensor is flaking out. The G5, on the other hand, would treate the sudden reversal of trend from correcting a low with carbs as “noise” - so it would indicate a dropping BG level when it changed filter strength with no indication that it had done so. Yeah yeah I know we’re supposed to confirm with a fingerstick before any treatment, but if I’m 70 and the CGM just said I dropped by 10 - I’m gulping sugar ASAP. I have no idea how in the world Dexcom got approval for non-fingerstick treatment decisions given that the G5 gave absolutely no feedback as to filter algorithm status.
As a result, I went back to G4 transmitters + Share receiver + xDrip+ and never once had any regrets of doing so. The G5 system was across-the-board inferior to the G4.
I’m at the point where I need to re-order supplies, and I’m considering moving to the G6 (because being able to take Tylenol again would be nice…) - Has Dexcom fixed the severe flaws that made the G5 nearly unusable?