1 year ago when I took a urine test during my health checkup, it's report showed 20-25 hpf RCB and then after Sonography test a small 3-4 mm calculi found in one kidney. Meanwhile I took urine test 4-5 times and everytime RCB was found. After 1 year the calculi was not found in Sonography test but 15-20 hpf RCB are still coming in last urine test which I have taken after 10 days of period. Also 2-4 pus cells also comes every time in urine test reports. I dont have any other problem in urination. There is no pain or burning sensation. What can be the reason for the RCB in urine? Which test can produce exact reason behind it?