Just a quick note: I have always aspirated before injecting, however I have probably done over 700 IM injections and never seen any blood.
Till Today!
While doing a routine injection in the glute of all places I was just getting ready to inject my 3mls of Tren/Deca/Masteron/Test when low and behold on aspiration there was a geyser of blood in the syringe body.
Just goes to show it pays to be safe.
FFM