Morning all, last week I was diagnosed with adrenal insufficiency and I have to have a cortisol test (or something along those lines where they inject serum and take bloods) done next week to determine if it's Addison's disease or something different. I am currently taking 10mg hydrocortisone at 8am, and again at 4pm. I am really concerned about it, I have hypothyroidism which I've been struggling with for 10 years.. never been very well controlled. I'm feeling really tired and just bleh. Has anyone had the cortisol serum test done? Was it ok? I'm worried about it, got to go alone due to bloody covid. I'm also worried about what's causing the insufficiency, if it isn't Addison's disease, what else could it be? 