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 ...

Proteinuria refers to elevated protein levels in the urine. It is not a disease but a sign that the kidneys are not correctly filtering blood, possibly due to a kidney condition. Several proteins may ...

Urinary tract infections, high blood pressure (preeclampsia), and kidney problems are common causes of protein in your urine when you’re pregnant. They all require medical attention and typically ...

DEAR DR. ROACH: My husband had many tests for bacteria in his urine. Three months ago, he had no protein in the urine; two months ago, the number of protein was 20; one month ago, the number was 100.