| España | Turquía | México | |
| Plasmaféresis | de $1,800 | de $1,200 | de $1,100 |
| Plasmaféresis DFPP | - | de $1,850 | - |
| Aféresis selectiva | - | de $1,550 | - |
Dr. Mustafa Serdar Sag is a rheumatologist at Medipol Acibadem District Hospital in Istanbul. He specializes in treating ankylosing spondylitis and rheumatoid arthritis. Dr. Sag holds dual board certifications in Physical Medicine and Rehabilitation and Rheumatology.