I double what metheniac said, seek help and training from your rep or their site. Regard returning it back, as any prescribed product or medicines, by law they can not accept a return!
that is a shame. I lost my sensor ( little grey thing) for my Dex 7 and they are charging a fortune to replace. Conidered the G4 but the upgrade was 400 $ out of pocket. Since its not that good, I will go off sensors for awhile. They are often more frustrating than convenient.
That said, I sure hope you cn get help and have success with the new system.
thanks for the info and encouragement. I will re think the G4.
We used the 7+ for two years before getting the G4. We had tremendous problems with the G4 for the first 3-4 weeks and went back and forth with the local trainer and tech support. After that, it's been great. There were only two things that we could think of what went wrong at first - 1. My son is prone to terrible skin infections, and we have to use Hibistat to clean his sites. When we switched back to just plain alcohol things worked better. The trainer said it shouldn't matter, but I believe in general the G4 sensor wire is more sensitive (which brings pros and cons) than the 7+ so we have had to be much more careful on site prep - make sure anything we put on really, really doesn't touch the site insertion except for alcohol. The G4 wire is actually half the size in diameter of the 7+ wire to make it more comfortable. 2. Bad box of sensors. Once we were able to go to a new box, we had no more issues as well.
I've also had some false lows at night. I usually wear my Dex sensors on my side just above my hip bone. I've noticed that sometimes when I sleep on the sensor side and compress it against my bed that I get a plunging low that triggers a false alarm. When I roll over the trace will then resume in the normal range. I've had this happen several times and I try to avoid sleeping on the sensor side if I can. Other than that I've not had problems with false nighttime lows.
I had a terrible start with the G4. I was in love with the Dexcom and started the G4 and had HUGE discrepancies in numbers. I contacted Dexcom and they said to try another sensor. I had never had a bad sensor before with the 7, but sure enough - a new sensor was all it took. We've been sailing smoothly ever since. However, in the process of contacting Dexcom, I also learned that the G4 is different from the 7 in that with the 7 you can calibrate ANYTIME. It didn't matter if your blood sugar was in the process of plummeting - you could calibrate away. The G4 - not so much. You CANNOT calibrate if you have a straight up or straight down arrow.
Long story short, if you haven't already, try another sensor. Barring that, make sure you're not calibrating too much or at the wrong time. Also make sure you're using the same glucometer.
And lastly, good luck.
OK so this is what Dexcom told me about G4 calibrations - they said you can not calibrate on one arrow up or down, or two arrows up or down. However, they said other than that you can calibrate as much as you want on the G4. They said this was different than the 7+ in that they suggested you calibrate as few times as possible. Anyway, it seems we were told different things - essentially, that the G4 is "calibration friendly" (except for swinging blood sugars) whereas the 7+ was not. I have to say this advice is working for us.
In general - When we didn't do well with the G4, I just figured that it was basically a new technology and we just had to figure out what works for us, and things have been running smoothly since. The range and overall improved accuracy have made things so much better.