I've been using the Dexcom for a while and have gotten into the habit of removing the safety lock before I stick the sensor to my skin. Last night I went to put in a new sensor. I can't remember the exact order of what I did, but right before I was going to stick the sensor pod to my skin I happened to look at it and saw that the plunger was pushed in all the way and the sensor wire was already all the way out! (At this point the "collar" was still in the down position.) I tried pulling the plunger back to see if the wire would retract but no luck - the plunger did seem to pull back maybe an 1/8 of an inch, but then the wire came completely off the sensor! So much for that one... Thankfully I still had another sensor left.
I don't remember pulling down the plunger at all, but I must have as the wire wasn't yet extended when I took the backing off the adhesive. I didn't think it was that easy to push the plunger down, but then up until now I've always had the sensor pod adhered before pushing the plunger.
Anyway, has this happened to anyone else? What do people think - bad applicator or bad user? I haven't contacted Dexcom yet as I clearly didn't follow directions, and I usually like to have the moral high ground of being entirely faultless before I feel comfortable demanding reimbursement...