Ok... if it has "0.1", "0.2" etc. then it would end with a "1" right? not 10. So if the syringe has a "10" on it, it's probably marked like a slin pin by iu and so 10iu = 1mg. Maybe I'm wrong, but the guy asked if 10=1mg, and that math ain't that hard so I'll give him the benefit of the doubt...