<s>[INST] My daughter is 5 years 6 months old, she always have a high RBC in her urine. Her blood tests like C3, BUN and creatinine are normal. Also her Ultrasound is normal too.. Sometimes her RBC in urine is 10-15, 8-10, 7-8. What do you think is the problem? [/INST] dear parent,  here are the causes of haematuria in children and how to diagnose according to associated symptoms 1) if there is clots of blood in urine, this is extraglomerular cause2) if there is fever,  dysuria, abdominal pain, this is urinary tract infection 3) if this happen following a trauma to abdomen, then this is hydronephrosis4) if the child suffer from early morning puffiness,  weight gain, oliguria and dark colored urine, this suggest a glomerular cause 5) recent throat or skin infection suggest post infectious glomerulonephritis6) skin rash and arthritis may suggest henoch schonlein purpura </s>