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, brai