There is a book on adrenal fatigue, get this, called "Adrenal Fatigue" :-) by Dr. James Wilson, who I have worked with in the past. Good basics.
Basics I look for:
Blood - CBC, CMP, Lipid particle size (VAP or NMR LipoProfile through LabCorp), Thyroid, HgA1c, Homocysteine, CRP, 25-OH D3, Magnesium
Saliva - Adrenal Stress Index
Blood - to cover nutritional bases, I use the SpectraCell Micronutrient test
If those were covered and addressed, not much would be slipping past you or your doc that wouldn't be noticed in a symptom pattern already. I can run any/all of these tests, if you were so interested.