Can anyone point towards where I can get the contents of a syringe tested? Short story is my brother has a small security firm that I'm helping him grow, the barrel and pin were found in the officers gate house by a cleaner and it's on a PFI school site so as you can imagine the proverbial has hit the fan. Just need to get it couriered off and tested, there is some clear liquid in the barrel. I've hammered the internet but might be being a bit thick.. Anyone?