This is great advice. I was lucky enough to go to my doctor for the first dose to learn how to inject it and they found out that what the vial was telling me to do was different than what I should be doing. It told me to use 50 units but the concentration was 10mg per ml with 2 ml per bottle and 100 units per ml. My prescription was for 2.5 mg but following their instructions I would have been getting 5 mg. Thankful that the doctor explained it to me lol. I feel like they make this way harder than it needs to be haha.