- urine proteinuria less than 20mg/dL on random protein creatinine ratio urine samples or a 24-hour urine protein less than 500 mg. NOTE: If on a random protein creatinine ratio the urine protein is greater that or equal to 20mg/dL, then obtain a 24 hour urine collection to accurately demonstrate that the 24 hour total is less than 500 mg/24 hours.