It's like trying to get the very last drop out of any vial, I leave it upended with the 1/2" needle barely in there just hanging, to get that last drop. I get it with those 1ml vials, its frustrating.
I get the Pfizer 1ml bottles from Costco. Has to do with insurance since they will only cover 4ml per month. Each of those vials has 240mg in them. I can get (4) 60mg injections out of each bottle. I use insulin syringes so there is no waste.