<s>[INST] My 14 year old son had routine blood work and urine test last week. Just got the results and his liver enzymnes are at 65. Also, there was a trace of blood in his urine. We go back in for re-test in 3 weeks. What level of concern should we (his parents) have at this point and what reseach should we be doing? [/INST] Hi,First repeat the exams. Look blood in urine could appear in health boys, there are some reasons for that like huge and strong exercises in the day or 1 day before the test, fever, some kinds of food, but may be the result of a bladder or renal infection, a stone. So repeat the exam if show blood again ask for a urine culture and renal usg. </s>