More than 26 million American adults are living with kidney disease. Most don’t know it — Over 90 percent of people with signs of kidney disease are unaware of it.

While the only way to know for sure if you have kidney disease is to get tested, there are a number of physical signs. Sometimes people attribute these physical symptoms of kidney disease to other conditions. This is because those with kidney disease tend not to experience symptoms until the very late stages, when the kidneys are failing or when there are large amounts of protein in the urine.