According to the National Kidney and Urological Diseases Information Clearinghouses, or NKUDC, kidneys work to filter the blood into urine, ideally preventing proteins from passing into the urine; however, high blood pressure can cause damage to the blood vessels in the kidneys, preventing them from properly filtering the blood and allowing protein to pass into the urine. This damage is caused by the increased pressure on the blood vessels, which causes them to stretch, resulting in scarred and weakened blood vessels.
According to the United States Centers for Disease Control and Prevention, high blood pressure is the second leading cause of kidney failure, second only to diabetes. High blood pressure can be diagnosed by a doctor after multiple blood pressure tests are performed at various times and often over the course of multiple office visits. High blood pressure is often marked with a consistent systolic blood pressure of at least 140 and a consistent diastolic blood pressure of at least 90. Kidney issues, specifically kidney disease, can be marked by a number of symptoms, but many people who are suffering from kidney disease have no noticeable symptoms. Kidney disease can be diagnosed after performing urine tests, which can include a dipstick test for albumin or a test to measure urine albumin-to-creatinine ratio, and blood tests.