David, you are so lucky.

A friend at work is on the waiting list for a kidney transplant and has dialysis every second day. Only a few weeks ago they took blood and he literally died because there was so little potassium in his body. Thankfully the medical staff were able to revive him. It was a dreadful shock to us all but he has had his diet and meds changed to keep him going until a donor kidney is found.

All the best for the operation. Keeping fingers crossed