As RichardMEL said, there's a big difference between a pre-dialysis diet and a dialysis diet. Even once one is on dialysis, no two renal diets will ever be the same; your proscribed diet will depend on your lab work and may vary from month to month. It can be very confusing for someone seeking out hard-and-fast dietary rules! Sitting down and speaking with a renal dietician will probably be your best bet.