Maybe you ate soap? Hehe, just kidding! Protein in the urine is another sign of kidney disease. Sometimes urine will appear foamy or bubbly when protein is present. A urinalysis will check for protein, blood and white blood cells in the urine (which should not be there). Diabetics should have a yearly urine test for microalbumin, small amounts of protein that don't show up on standard urine protein test.
It is important for people who are at risk for developing kidney disease to be checked regularly. People who are highest risk for kidney disease are those with:
diabetes high blood pressure or a family member with kidney disease