Shaw is correct. Most of the info on this board is available to members only to protect their privacy.
We hope you join us so you can read everything and share with us.
In the meantime, there's information about IPSS on our Wiki at http://www.cushings-info.com/index.php?title=Diagnostic_Testing#Petrosal_Sinus_Sampling
Best of luck to you!
Top right hand corner there's a box that says "Search..." You can select where you want to go search (All Content, Topics, Members etc). I believe you have to register/create an account. before the search function is visible.