My dr. had did a saliva test on my adrenals..cortisol..on me a few years ago.... though I had a normal rhythm of up in the a.m. etc... I was low on the charts.. so based on that the report said I was borderline hypocortisolism. I started licorice.(yuck),,I also took an whole food supplement adrenal booster..(can't remember the name anymore), then took a powder adrenal booster-Dr. Wilson's Super Adrenal-. I'll have to look back in my records to see what else I took. I go through periods of being really tired,,constant yawning even with 8 or more hours of sleep, achy joints and muscles, brain fog..feel like I can't even muster enough energy to move from sitting.. it is like a crash. Crash and burnout to be exact and it can last for a while. Usually it comes on from not taking care of myself as well as I should. I'd like to hear what this Dr. suggests for you. Interesting to learn new things. Very nice she remembered you and took an interest. There really are good ones out there.