A person with a single kidney is prone to develop chronic kidney disease (CKD). If you have a normal single kidney, you would expect your estimated glomerular filtration rate (eGFR) to be between 50 and 70 milliliter per minute per 1.73 meters squared. Hence, from your description, you may well have CKD. I also recommend that you have urine testing for blood, protein and infection to assist in the diagnosis of CKD. You should discuss this with your physician.
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