question about kidneys

Both older sisters have had kidney transplants. Each had an issue with protein levels for years until their creatinine levels warranted dialysis and then eventually transplants. I feel like I'm next in line. I have a +4 level in protein, although I'm not quite sure what that means exactly. My doc said creatinine level is ok, just need to monitor protein level. No diabetes or high blood pressure. Anything I can do right now to help the kidneys?
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