I had a urine test recently and the result came back that traces of blood was present in the urinalysis. the blood is not physically visible as the colour of the urine is normal. please what could be the cause. i also know that days before the test, i had just had a miscarriage and was bleeding. After some weeks, a repeat was done and the result came back that traces still existed. please note that the repeat test was done about four days after i had my period. please could there be an explanation for this? Also what does RBC S and 20/HPF indicate. Thanks