My So. Gets Frequent Nose Bleeds And Leg Pain The

My so. Gets frequent nose bleeds and leg pain the doctor tested him for Von Willebrand all was normal except for the thromboplastin time it was elevated to 36 normal is 22-34. His complements levels were elevated ch50 60 , c3 178 normal is 80-170 crp was 9 normal is >8 absolute eosinophils was 524 normal is 500. Should further work up be done?