A weird thing about the G6

I saw another post saying Spike app is working again.

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G5. Haven’t had any problems with the G6 yet.



Can Spike and Dexcom G5 app both be installed on same phone?
For xDrip, was recommended to uninstall dexcom app.

I was asked only once for troubleshooting purposes - trying to determine if I had sufficient fatty tissue. I was never told it was an FDA requirement. I’ve used Seven through G6. If I remember correctly, the question came while I was using G4 or G5.

I’ve only used xDrip for IOS (of which Spike is a fork) and it needs to have the Dexcom app disconnected. Dunno if Spike gets around this limitation, but it would be nice if it did.

I just started using xDrip on Android, but have friend that has iPhone with Dexcom G5 app, not using receiver. Wants to try Spike, but keep Dex until comfortable with results. May only use spike for trans reset.

What do you mean by xDrip for iOS. Is that on your iPhone? (I assumed iOS generally meant iPhone, and xDrip only worked on Android)

It is kinda confusing. The original development version is listed as iosxdripreader on GitHub (it’s still being updated and you can still can download and run it, though you need an invite from the developer, Johan Degraeve). Spike is a development fork from that original. I started using xDrip for iOS before Spike came along, and I never switched over, so it still appears as “xDrip” on my iPhone. I haven’t used Spike, so I’m not sure how different it is, but Johan’s Git now indicates it’s the production version, even though according to the install instructions page you have to re-authorize it on a weekly basis unless you have an Apple professional developer account (ah, the wonders of open-source software). Not sure if that’s how it’s always been or a condition of their recent contretemps with the App store.

IIRC you only have to go into BT preferences and “forget” the G5 connection, not actually un-install the Dexcom app. I assume the data for the period when you’re using Spike/xDrip is “lost” as far as Dexcom Clarity is concerned, but that isn’t a big concern for me so I haven’t actually checked. I only use it to bridge the gap when I’m waiting for a replacement transmitter and need to keep the old one going for a while past the official end-of-battery,

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I found it odd that they asked my weight, but not my height. I’m 5’10", so my BMI is a lot lower than someone of the same weight who is, say, 5’2".

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The advice not to over-calibrate is helpful. I did calibrate that sensor several times in the first 30 hours before it went crazy.

I didn’t check or calibrate the current sensor in the first few hours because I was sleeping, but it was very accurate when I woke up and has been since then. Some of my previous sensors were far off in the first few hours and I calibrated, but maybe they would have corrected themselves.

With the G5, it’s OK to force a sensor into submission by calibrating 3x, 15 minutes apart. It works, but I seldom have to do that. For some odd reason, my has more issues with her G5 and complains that it will show her glucose lower than what she calibrates it to, when it reads low to start with. I keep reminding her, do it 2x and if that fixes it you are good to go; otherwise calibrate a 3rd time.

I don’t know if Dexcom suggests doing the same with a stubborn G6 sensor.

Best advice I’ve received from Dex tech support is to ignore the repeated request for calibration and let the sensor settle down. Except for one sensor, they’ve all settled down and started working fine 6-8 hours in.

The last 4 sensors I’ve “soaked”, inserting them 4-6 hours before starting a new session and it’s dramatically cut down on the calibration errors, false lows, etc. Just make sure you wait about 15 minutes between ending the old session and starting a new one.

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Absolutely the same for me. I was ready to bag G6 and move back to G5 until I soaked the sensor and backed off on repeated calibrations. I also found using very light pressure on the inserter also helped.

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Whether I soak a sensor or not, I DO NOT CALIBRATE. I leave it alone. I have yet to have a sensor that wouldn’t come back into a safe level.
The first couple sensors I calibrated because they were off. I think this was helpful at first, but still would have been better to just leave them alone.
If you want to test to know what your numbers are, fine. But I suggest not calibrating unless the sensor is really far off after you first 12 to 24 hours.
All of this is just my opinion. It is what works for me.


Is there a reason that the G6 (which I love!) is so bad in the first 12 hours?

I’ve found myself intentionally going to bed with higher than usual sugars, otherwise my first night with the G6 is all LOW warnings and I end up turning it off!

It fixes itself the next day, and doesn’t happen again, but it’s really frustrating that every 10 days I get a bad night’s sleep :frowning:

(this is for a brand new sensor, I haven’t rolled over a sensor yet)

I think a lot of us get the false lows.
Reason for it? Maybe they are wanting to be super cautious with a system that doesn’t ‘need’ calibrations?
Or maybe the new sensor just takes longer to settle in.

I had issues in the first day with the G5 as well, just not as much as I have with the G6.

Soaking a new sensor seems to have solved, or at least mitigated most of the issues.
Also, don’t put a new sensor in before bed. I cannot stand the urgent lows where it says I am 40 when I am really about 80 to 90.
I have rolled over couple sensors now. I am not pushing them out super long yet. I am only doing it to get the 14 days so I can start soaking my sensors on Saturday night and insert a new sensor on Sunday morning. This system always worked very well for me, so I do what I can to make the G6 last a little longer.

Since I had to change sensors twice yesterday and was awakened twice with erroneous low alarms, one of them “urgent,” i totally sympathize.

What’s weirder though, is what happened with my first one. Once it came out of the warmup it almost immediately plunged into Urgent Low and beyond, finally bottoming out with no reading at all, just the warning, which I guess means it hit zero. So I called Dexcom, did a bunch of checks, determined it was the sensor that was the problem, they explained that this is how the transmitter reacts when it’s basically not getting any info from my interstitial fluids. They said swap to a new sensor and we’ll replace the bad one.

So I do that, only when I rip the “bad” one off, lo and behold: a blood spot. I’d hit a vessel when I inserted it. What’s weird to me is that with the G5 I’d gotten used to dealing with the occasional bloody insertion, and while the first 24 hrs were pretty shaky, it was best to just wait it out and it would settle down and be fine for the usual length of time. With the G6, hitting a vessel just completely incapacitated it. I mean it was not eccentric, it was zeroed. Is that a new thing with these? Anyone else experience this with a bloody insertion?

I have hit blood. No gushers yet, so not really bad ones.
Didn’t seem to make anything change.

Yeah, mine wasn’t a particularly bad one, but I’d felt that little “ouch” going in that’s usually a bad sign, and when I pulled it off there was a bloody spot. Maybe just coincidence, I dunno.

I hit blood once too, you could see it around the edges. So I tested a little more than usual and it was fine. But I don’t seem to have much of a problem with the warm up period, only a couple of hours for me at the most. I do put them on my arm.