I had to wait for a BW request once that never came. The doc was going to send it by post and until it arrived I was not to have my next injection.
I waited as long as I could and was feeling really poorly by the time I decided to have the injection anyway.

Then having some leftover TestoGel was great. I used it until I felt the injection had brought me back up to the level that was working for my.

So don´t toss it