I was going to be given this test last year but I went away abroad for a long stay, been back and forward but could not arranged it. Now I have no excuse apart from I'm really scared of the side effects of the Synacthen. Do I really need to get this test I wonder? I don't want to feel any worse than this for any reason. I seem to be very allergic to many things at the moment, so how dangerous to get this hormone injected for measuring cortisol profile? Any thoughts?