My son has had 2+protein and 1+ blood in his urine since July or before. It is RBC\'s 3-10 by Micro. He also has von Willebrand Disease, Asthma, cronic strep throat and sinus infections. His serum protein is flagged low, and his total pro/cre ratio is .32. How concerning should this be? What questions should I ask the Nephrologist when we go?