Just a quick check as really don't have a clue about cortisol blood tests lol. My mum's serum cortisol came back as:
CORTISOL 298.600 nmol/l 133.00 -537.00
She did the test early in the morning at about 8am. From a quick read this is in normal range but I know accepted normal ranges are often not optimal so just thought I'd double check with you guys.