My skinny 12 year old daughter has been using the G6 since October 2018. It’s a love/hate relationship! I have had to get numerous sensors replaced for various reasons but when they are working well they are very accurate and do last the full 10 days. She wears the Dex in her arm or lower back/butt. It does get easier as you figure out what works best. A few things that I have learned.
(1) Placement - For my daughter, her arms work best and get the most accurate reads. She’s too skinny for the stomach to be comfortable. The lower back/butt works but sometimes has some issues. When placed in her back, I may see some erratic readings for the first 24 hours where the graph doesn’t have the same curve that you expect. However, it usually sorts itself out and is very accurate after the initial 24 hours.
(2) Insertion - I always pinch and plump up the fat of the area where I insert. I raise the top end of the applicator up a little and try not to press down too hard on the orange button. She is skinny and if I don’t do this she is more likely to get a bleeder. Not all bleeders mean the sensor needs to be replaced. If there is minimal blood it will usually still give an accurate read. So unless it’s a lot of blood or it hurts, I will usually leave the sensor in.
(3) Don’t overcalibrate - I usually never calibrate. The only time I will calibrate is if it is in the initial 24 hours after insertion and the graph looks off and the finger prick is really different. And I will only do it twice in that 24 hour period. You also should only calibrate when your child’s BG is steady and not rising or falling. Since the Dex has a lag time, if your child’s BG is on the rise or fall and you calibrate with the number from the finger prick, you will actually be giving the Dex the wrong information which will confuse it.
(4) Compression false urgent lows - My daughter has had a number of false urgent lows in the middle of the night. I believe these are “compression” lows that are caused when she is lying on her Dex. Usually when she rolls over off her Dex the readings will go back to normal. However, sometimes these can lead to sensor errors where it needs to reboot itself. The first time this happened, I thought all the alarms going off were real, was ready with a snack, only to take a finger prick and realize it was a false alarm. Now I know better - that you don’t go from 100 to 39 in 5 minutes while sleeping. When you call technical support, they will tell you to replace the sensor, send you a new one, and never give you any explanation. However, I have realized that after these compression false urgent lows, the sensor still works fine and doesn’t actually need to be replaced.
It can be a very frustrating experience, but at the end of the day the pros outweigh the cons, and I would still recommend the G6. When the sensor is behaving, the numbers are so accurate and provide so much peace of mind as a parent.