Foreman, I know that. I myself shoot it twice a week, for the sake of maintaining a plasma level as steady as possible.
Buuuuut.... There is a big debate as to really how much of a variation in that level is tolerable, therefore making twice-a-week injections a waste of time and effort.
Obviously Shrir is a newbie, only 6 posts. i know how hard those first shots in that first cycle are. I almost passed out at first!!! So in his case (maybe in all cases) once a week injection is absolutely more than fine. I stand by my answer.