Small amounts of protein can appear in your urine and be OK. Above a certain level, however, may indicate proteinuria, which can be a red flag for kidney disease. Proteins are among the most important ...

Some people are more likely to have protein in their urine. If your doctor does a routine dipstick protein urine test, you might need to do a 24-hour urine protein test. What Is a 24-Hour Urine ...