rambling about CGM

So, something that annoys me about the over the counter continuous glucose meter I use: it doesn’t adjust its statistics based on the delta between sensors.

To be fair, a new sensor is dealing with a bit of an immune reaction, so its data can take a day to fall into normal ranges and patterns.

But the app does allow for a “grace period” of up to 24 hours after the end of a sensor’s 2-week lifespan before it starts ignoring readings, and that seems like an ideal time to start a new sensor and look to see how far off they are.

Maybe it’s not medically sound to do so? All I really know is that all meters (continuous and not) can vary from “true” by +/- 15%, and the only real strategy to correct for it is to measure repeatedly. The prescription versions do just this – you can add finger-stick readings to the data, and it adjusts its own based on the comparison.

I kind of wish I had a way to get the raw data from the sensor, as well as the post-session readings. I know that if the sensor loses connection to the app, or gets rebooted (magnet switch) after being told to end its session, it will intermittently look for its phone via bluetooth, (which is surprisingly sad, to have to continually respond to pairing requests from a bit of electronics that’s slowly running out of power.) I just don’t know what to do with that info, to make some use of it.

And of course, I’d love for some functionality to be rolled into the official Dexcom app – they could essentially make these more accurate without having to change anything about the hardware itself. But it just seems like the sort of thing that, if this was open source or even partially open source, you’d long since have had internet people submitting pull requests with code to add this, because they want it too.

Quick review of 2 non-prescription CGMs (continuous glucose monitors). For the past few months I've been wearing either the Abbott Lingo or the Dexcomm Stelo #CGM.

Priced similarly, both are for "non-clinical" use, but Lingo's more of a lifestyle device and Stelo's better for mild #diabetes. Both use algorithms to smooth what has to be very noisy readings, but to different degrees.

The Lingo's approach is more sensitive. It's much more likely to reveal unexpected spikes or drops. It's also erratic. You get live readings that are sometimes way off. It tells you whatever it thinks it sees.

The Stelo is more conservative. It has an opinion and only reports numbers after 15 minutes after it's crunched the data. Results are much closer to my glucometer, but misses sharp changes as it smooths out unexpected results (I exercise hard).

The #Stelo also shares data with Apple Health & other apps for further tracking. The Lingo was interesting, but the Stelo meets my everyday (mild) diabetic control needs more.

tittar på noterade bolag som gör diabetesgrejer
DexCom har en sensor man kan köpa utan recept, tyvärr endast i USA :( https://www.stelo.com/

köper regelbundet produkter från de tre förstnämnda, har ingen pump just nu
BBNX är nyligen noterat ser jag
Vilka har jag missat

insulin:
Novo Nordisk $NOVO
Sanofi $SANp

sensorer:
DexCom $DXCM

pumpar:
Tandem Diabetes Care $TNDM
Beta Bionics $BBNX

#diabetes #t1d #insulin #cgm #stelo

I have ended my experiment using a Dexcom Stelo alongside a Libre 3 Plus. I have learned all that I think I care to learn.

The Stelo is removed and no longer contributing to annoyingly inaccurate data.

It lasted longer than 10 days without getting noisy, which was one of the big things I wanted to learn. This means G7 shouldn’t be a big problem. This is important as I will be switching to the G7 when I get my Mobi pump.

#Diabetes #CGM #Dexcom #Stelo #G7 #Abbot #Libre3Plus #Libre3

I’ve decided Dexcom Stelo is not a good product.

Freestyle Libre 3 Plus is also a 15 day sensor that doesn’t allow calibration. But in my experience, Libre tends to not require calibration as it tends to follow BG fairly well.

This Stelo has been persistently 20-50 mg/dL over Libre 3 and BG.

If this is a common problem, this makes figuring out if the regimen is doing its job way more difficult.

And Libre 3 Plus is cheaper.

#Diabetes #CGM #Abbot #Libre3 #Dexcom #Stelo