When is the best time of day to get cortisol test?
Well, I am finally getting a serum cortisol test after seeing first Endo today! My question is, what is the best time of day to be tested? Morning, afternoon or later in the day? I've read that cortisol levels change thru out the day! Please help! Thanks!
I had both the saliva and blood tests done and the levels were checked throughout the day.
Technically your levels "should" be highest in the morning, decreasing as the day goes on. However, mine were at their highest at 2 am, I would wake up out of a sound sleep and have lots of energy until 5 or 6 am then crash - the levels were at their lowest at this time. I wouldn't have known this if I hadn't done both tests.
Thanks for the response! Anyway, so should I get my bloodwork (cortisol) test done in the morning? I plan on going at 8am. Also, from what I've read, what if the tests come back as "within normal" range? Do I give up or insist on more tests? Any help would be appreciated! Thanks so much, as I am a newbie to this site!
You might also want to get a cosyntropin (Corsotryn) stimulation test, to see if your adrenal glands can respond adequately to ACTH from your pituitary. This test found that I had a problem, when my baseline cortisol level had been fine.