If you are experiencing a lot of bruising after your injections, you may find that it helps to reduce the amount of diluent used when mixing the powdered form of interferon. Schering always overfills their diluent bottles or syringes. When using the powdered form of Intron-A, you only have to use enough diluent to dissolve the powder. 0.4 to 0.5cc is a comfortable volume for subcutaneous injection. The only time you need to absolutely use a known volume is when you use a 3mu vial for multiple doses and you have to know how much you put in so you know how many mu per cc and what the volume will be for fewer than 3mu a dose.
