THIS is why I keep wanting to roll my sensor over to a new session rather than replacing it. I hit day 21 this a.m. and looking at the ugly mess of peeling tape-overs I decided screw it I’ll just break down and put on a new one. It was still accurate, but it was about to fall off and at some point you have to accept that you can’t fight adhesive erosion for ever. So I did it, and all goes well, pretty much until lunchtime pre-bolus, which starts doing what it’s supposed to: get me set on a down curve before the carbs kick in. But down and down and DOWN goes the CGM curve, and soon I’m getting URGENT LOW, 48 with a down arrow, and I know it’s not correct but I test anyway. Partly so my office mates won’t come rushing in thinking I’m dying. Sure enough, fingerstick: 91. “Don’t over calibrate!” warnings ringing in my ears but this is so far wrong. So I finally entered a calibration, hoping it’s not going to boot me off with one of those error-checking interludes. So far so good.
But dang—I know the first 24 hrs can be flaky but when I first upgraded to G6 I had very little of that, not really any different from G5. Now it seems like my last 2-3 sensors have all gone crackers at the start, and it’s always exaggerated lows in this initial period. I know it will settle down to its usual very high accuracy, but until then it’s almost useless. Guess I may just have to break down and try the “pre-soak” thing, but honestly I really hate adding another complication to the process of sensor replacement. Whole point of the G6 is to make that process easier, isn’t it?