Is it possible to contaminate a 50 ml bottle of QV enantat ? I am wondering this because my injection sites have been getting a lot redder than normal. Also the injection sites get kind of hot like they are getting infected. I always use a new needle and barrel, and I use rubbing alcohol to clean the injection site, and top of bottle. If it is possible to contaminate a bottle of test can I boil it to sterilize it? Any advice would be great,, Thanks