DefinitionThe RBC urine test measures the number of red blood cells in a urine sample.Alternative NamesRed blood cells in urine; Hematuria test; Urine - red blood cellsHow the test is performedA clean-catch urine sample is needed.To obtain a sample, boys and men should wipe the head of the penis clean. Girls and women need to wipe between the vaginal "lips" (labia) with soapy water and rinse well. Your doctor may give you a special clean-catch kit that contains a cleansing solution and sterile wipes.Urinate a small amount into the toilet bowl to clear the urethra of any contaminants. Then, collect a sample of urine in a clean or sterile container. About 1 - 2 ounces of urine is needed for a test. Remove the container from the urine stream without stopping the flow. You may finish urinating