I have 3 things that I need definition as what i'm allergic to. 1st. one is IGE Total, blood, which is at 1876H. Under range it says Ref: < 115. 2nd. is Derm. Farinae Ige, blood its at 0.15H range 0.10. 3rd. is P. CHRYSOGENUM IGE, ITS AT 0.17, also the range is 0.10. What is IGE? And what is the cause?