On my last vial of HCG instead of mixing it with 1ml, drawing it out then adding another 4ml to a mixing vial, I just left it in the original HCG vial where I added the 1ml and drew 20 units from there when I needed it for 1000iu. I thought this was way easier.
Any reason not do it this way all the time?
Any reason not do it this way all the time?