I guess it was not low enough for them in the morning to warrant further investigation.
Moose is right.it should have the draw times ranged. There are 4 time periods usually listed. In fact with aldosterone it even says if you tested laying or sitting.
Well, my lab uses a wide AM range of 4 - 22 mcg/dl for for morning blood cortisol.
it didn't give a range, said on the lab that "open to interprataion"
Taken at 8am so it seems it should be higher.
Suggested that sleep issues could be related to cortisol levels being high in the am and low in the morning... as such
You need the range. It is different for AM vs PM too.