my huband's 8 year old nephew is complaining of pain on his left lower hip down to his thigh, he has difficulty walking and said that he just played with his toys the day before. he went to see his pedia and was requested to take several exams ( CRP, ASO TITRE and ESR). He came back with negative and normal results to all exams. when the pedia saw the results, the diagnosis was juvenile rheumatoid arthritis and was given ibuprofen as pain reliver take 3 times a day for 1 week and as needed. my question is CAN NORMAL ASO TITRE, CRP AND ESR EXAMS CONFIRM JUVENILE RHEUMATOID ARTHRITIS?