Hi. I have IgA Nephropathy, with a eGFR of 70-ish. I eat healthily with lots of fruit and veg, low sodium etc. Unfortunately my potassium levels are high 5.7. I am concerned that to change my diet to low potassium will be a diet less supportive of low blood pressure. What would you suggest? Also I was seeing a kidney consultant a year ago but was discharged as kidney function was not too bad. My GP in my last OPA denied that the kidneys excrete toxins, denied that creatinine was measured as a marker for small molecule filtration and seemed generally defensive and dismissive of what I had learned about my own condition. I am concerned that she does not have a good understanding of this condition. I work in a specialist mental health team and I am very aware that GP’s lack in depth knowledge of subjects as they need instead to have some understanding of terrifically broad subjects. I am however concerned that her advice may not necessarily be well informed. I am also concerned that one should also be careful with internet sources.

Your potassium should generally be in the range of 3.5 to 5.5 milliequivalents per liter (mEq/L).  Your potassium is mildly high.  I might suggest that the test be repeated to see if the potassium is consistently high.  If it is still high, then there are medications that can be used to lower the potassium.  I suggest that you discuss your concerns about the potassium with your physician.

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