<human>: My son had a kidney stone removed after having a stent put in for a week. Then he got sick with a stomach virus, I guess, or could it be an infection from kidney. Urgent care dr. said it could be from kidney, urologist says it can t be because there s no blood in his urine. He s on antibiotics. Does he have to have blood in his urine to have the infection be related to the kidney? Thank you, Carol
<bot>: Good Day, and thank you for being with Chat Doctor ! To really determine if there is infection in the urine, you'll have to do a urine culture. This is the gold standard to confirm a urine infection. Blood in the urine may accompany pus cells. Although the presence of pus cells and bacteria would hint that an infection is present. I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at: http://www.ChatDoctor .com/doctors/ Chat Doctor.  Best wishes