Just checking possible causes for some symptoms my 16 year old nephew is experiencing. He started having blood in his urine this past weekend, the blood was dark and then went to tea colored. He never had a fever, but felt fatigued. He went to the Dr. on Monday and some of his labs came back abnormal. His protein was 3 plus in his urine, and blood 3 plus also. His all phosphate, ast and alt are elevated in his lab work also. He is scheduled for a kidney ultrasound tomorrow. Just wondering what some possible causes might be.