I read on *** that the slin pins have the needle attached so you cannot swap out of the needle after you have drawn the solution for IGF inject.
I guess the main question is whether it is ok to draw up from the IGF vial, then from the BW vial and then shoot with the same needle? Also, considering this is water based, how can you make sure there is no air without loosing some of the solution. Obviously, one drop makes a big difference when it comes to IGF.
Thanks.