that is far too low, it should be above 400nmol, and I consider that to be low. next,-- blood serum, half of it is useless as it is bound up by proteins, and rendered useless, they either do not know this or it is ignored. SO It gives a proper reading, not recognised by the mainstream of course!--- I have had many saliva and adrenal bloods done and I had an adrenal crisis an d ended up in hosp all thinking I was mad because of what happened but when I read a page on the internet from the addsions support group yeah-- there was everything that happened to me-- still ignored !!! helever is correct , I went to netdoctor, 5 years ago and printed it off---it reads-- adrenal insuffieciy is simply not considered, one of the doctors on net doctor I went to see, and he did look thru all my results and said low cortisol, however I wasn't given replacement, I have had to rely on my self and a private doc for dhea and preg; that concerts to all missing hormones, I was given prednisolone 5 yaers ago to combat massive eyelid swelling an di never felt so well, bu twhen I stopped after a week I crashed an dbeen ill ever since.. I need that hydro' but can I get it-- NO!!!!!!!!!!!! so, find your proof and do not be told you are fine, also , it changes it should be high in morning for the energy of the day, then tail off as the day goes on, morning noon late aafternon and bedtime shoul dbe low for sleep. I use genova lots use blue horizon.