Sometimes I draw blood in the syringe when I asparate, is this shot no longer any good once blood has mixed with it, can I reinject same shot different location. I hate to waist it. Another thing I'm 43, 44 in 45 days alot of fours haha... anyhow I take my HGH shot at around 10 to 11pm I don't go to sleep till around 2 to 3am, am not getting the best results or is this OK acording to my age.