Retrospective Analysis of Performance and Treatment Data Collected for Genius SleddFlux Filter, Ultraflux AV 600 S Filter & Genius 90 Concentrates in Haemodialysis Patients

This is a retrospective study (looking back at past records) that analyzes data from kidney dialysis patients who were treated with specific dialysis filters and concentrates (Genius SleddFlux, Ultraflux AV 600 S, and Genius 90) in 2019. Researchers want to evaluate how well these medical devices performed in real-world clinical settings. **You may be eligible if...** - You were a dialysis patient at the participating center between January and December 2019 - You received treatment using one of the specific dialysis devices being studied - Sufficient lab values from your treatments are available in your records **You may NOT be eligible if...** - You were simultaneously using a different type of filter or adsorber device during the same treatment sessions Talk to your doctor to see if this trial is right for you.