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Low potassium was diagnosed through a general blood check I had last week, as was high creatinine. One of my kidneys was removed due to cancer (over 10 years ago). My GP periodically checks my blood. Your site is very informative and clearly explains low potassium, its causes and symptoms. The muscle wasting that has occurred in my body this year is now, perhaps, explained together with general weariness that feels abnormal. Published: May 26 ::