My daughter is suffering from low grade fever (within 100 degree F)since 45 days. Her Hb 8.6(beta thalassemia trait) .direct biliurubin 0.46. indirect biliurubin1.51. VITAMIN D,25-HYDROXY,SERUM 27.70 nmol/L All other blood report tbc. lft . ,usg. endoscopy.fibro scan, x ray,widal test, mantoux test negative please guide.