My be the confusion comes from my being a layman...
The correct expression should be Immunoadsorption. It was a filter process and I got my own plasma reinfused. According to the information sheet I got from Fresenius its a "broad band" adsorber with the trade name "GLOBAFFIN" using a substance with the trade name "Peptid-GAM" which binds IgG (best affinity to subclass 1,2 and 4).
A reference for its application: http://www.karger.com/article/Abstract/90659
I wonder if I should change the title of this thread...
Yes this is immunoabsorption, not plasmapheresis. Clinicians are often sloppy with use of terms so it may well have been described as plasmapheresis. You could call it immunoglobulin-pheresis maybe but immunoabsorption is the term that has been around for a couple of decades.