@rice A good question! Like you, I was following a good renal diet, including severely limiting my potassium intake. Potatoes, bananas and oranges completely gone. As my kidney disease progressed, my nephrologist was pleased to see those numbers stayed in the normal range, and that I did not require extra attention to that. Then those numbers went way low, and I have now been on potassium supplements! Potassium is an important mineral in heart health. We recently lowered my dose of potassium to 1 20meq tablet a day, and added back into my diet, banana, potatoes, oranges and melons and other regular foods, and hope to get/keep those levels at a normal level.

Here is an article from American Assn of Kidney Patients that you might find helpful" https://aakp.org/food-for-thought-managing-your-potassium-intake-how-much-is-too-much/
Ginger