Well, I thought I’d share an update with my experiences with the CGM over the past few months.
Initially, I must say that I do love the CGM, it’s been a great asset to my diabetes control. I’ve managed to prevent going above my desired BGL range before it happens, prevent lows, and also watch some of the trends after eating and also whilst sleeping.
I generally found it to be quite accurate within the first week of use. Usually for me it was within .1-.4 mmol/ml of my finger stick readings.
The only exception to this is it always seemed to be at least 1 mmol/ml difference in the mornings. With the CGM often being lower. The only conclusion I could make here was that as I started to wake up, my blood sugar would rise a few mmol and the CGm just had not caught up yet.
I already had pretty tight control, so in some ways it was really just a personal confidence booster, as it showed me that my blood glucose actually stays pretty stable after eating. It also meant I could sleep without worrying about hypoglycaemia, as I could just set alarms. One of the most valuable experiences was wearing it during exercise. I go rock climbing 2-3 times a week, and usually bolus before this to prevent a post high BGL. I’ve never really known what my blood sugar looks like during the hour I’m climbing so it was great to see this.
I also found it really useful overnight as I would set an alarm for if I went over 6.5 mmol/ml and then could correct in that instance, rather than waking up with my BGL being like 8 or 9.
Having said all that, I have unfortunately decided to not continue funding the device. A number of things have lead to that, but predominately it was the fact the sensors simply did not seem to last anywhere near as long as I had hoped.
The three sensors I have currently used (I have one left that I will be waiting to use in a few weeks for the week off I have over Christmas), have only lasted around 10-12 days on average. Typically I get a week of very accurate readings, then it seemd almost on the 10 day mark the readings would start to become a bit less accurate and a few more days after this they would start randomly jumping around, giving me warnings when I wasn’t low and showing the dreaded ??? symbol.
Whilst 10-12 days might be fine if you have insurance that covers the sensors, having to fund this myself, I would be looking at something in the vicinity of $5000 a year.
I’m also going back to university in the middle of next year, and subsequently moving from full time to part time work. It’s been a great insight for me, and I’m sad I won’t be able to keep using it, but hopefully in the not too distant future some form of subsidies or insurance coverage comes into Australia for these awesome bits of tech.