I've seen a few comments about
1 how our vials are often just a little short. I've also seen comments about
2 sometimes we lose a little oil dribbling from the injection site.
Here is a simple solution that I have used for years giving literally 1000s of IM shots. Most well trained nurses use it while giving IM injections. Its the air lock or sometimes called bubble lock.
Its when after you draw back the desired dose of medication you pill back just a tiny bit further until you see a tiny little bubble at the top. (About 0.1 cc) Then you change the needle. Invert the needle and inject into the tissue. The bubble will naturally float to the stopper when you invert it and yes inject the bubble too! Its HARMLESS!!! and does 3 important things.
1 It helps trap the (whatever you injected) by blocking the track that the needle makes going into the muscle with a little air bubble.
2 it clears every teeny tiny drop of (whatever you injected) from the needle and the hub.
3 you get a more accurate measure of (whatever your injecting)
I assure you this is completely safe.
Thought I would share cause I haven't seen much or anything in the active threads about this very standard, practical technique.
Hope this can be of some help for some of you dealing with the problems this little trick can help fix.
And no this probably wont work at keeping 3ccs of oil in a single tricep head.