@dad0229 I’ve been dealing with CKD since 2005. I’ve had a nephrologist since about 2008. These bouts of being light headed occurred over the years. When it was BP meds that needed adjusted my nephrologist did so. Switched one med to something else and adjusted the dose of two other meds. There was a big improvement right away. The nephrologist also monitors labs. When the sodium was low he caught that and made some adjustments again. He also diagnosed a condition that I had called orthostatic hypotension. It is what Ginger was referring to. It is when BP changes suddenly with changes in position. Such as a BP drop when standing up after laying or sitting down for awhile. That can also cause lightheadedness. Being aware that this exists helps to prepare for it. The lightheadedness that comes from dehydration continues to be a problem from time to time. I am not good at staying well hydrated. I was just reminded of this on Monday at a nephrology follow up appointment. It is a lot to mull over. I hope you can get some answers at your next appointment. You can also maybe get some insights into your lab results and what they may mean regarding this. Ginger has responded to you. She is great and has knowledge and experience in kidney things. Someone else recommended phone calls to get to the bottom of this. That is good too. Can you keep us posted on your progress?