Question: I would like help understanding my labs. I have been very fatigued with headaches and lightheadedness. I also experience hypoglycemia. My B/P can get very low. I had a Cortisol Stimulation test ordered by a hematologist. During that particular test, they forgot to take my ACTH level but my b/p before the test was 84/42 and cortisol was 9.1. After the injection the cortisol went to 23.1 and my b/p went to a normal range. I also felt great for a few hours. The Dr. called me back in to get the ACTH (that was forgotten) another morning. That particular test showed that my ACTH was 8.0 and my cortisol was 3.7. Please help me understand these low normals and if it could be causing my fatigue, h/a's and low b/p. Side note: My b/p can be within a normal range, but I still feel horrible so I don't think the low b/p is the only reason for feeling sick. Also, I'm not a runner which I know can contribute to lower b/p.

Thank you
What kind of adrenal insufficiency? Would it be secondary (Pituitary) since both the ACTH and Cortisol are low?

Are there other tests that should be done to find out the cause? Isn't secondary adrenal insufficiency quite uncommon?

What diagnostic testing should I request.

Thanks again,