Kidneys help filter waste, balance fluids, regulate electrolytes, and support blood pressure control.
Early kidney problems may not cause obvious symptoms. Some people only discover changes through blood or urine tests.
Common kidney-related markers include creatinine, eGFR, urine albumin, urea, and electrolytes. These values should be interpreted with age, hydration, medications, blood pressure, diabetes risk, and clinical history.
Possible warning signs can include swelling, changes in urination, persistent fatigue, uncontrolled blood pressure, or abnormal lab results. These signs are not specific and require medical evaluation.
If kidney markers are abnormal, useful questions include: Is this change temporary or persistent? Do I need repeat testing? Could medications, hydration, or blood pressure be affecting the result?