The test includes 6 collections of cortisol throughout the day. To capture this response, three – rather than one – morning saliva collections are needed to properly chart the diurnal cortisol curve within 60 minutes of awakening.
The Cortisol Awakening Response – also called CAR – reveals more detailed clues that help in assessing adrenal hormone function. This testing is often useful for cases of PTSD, major depression, chronic fatigue syndrome and other severe stress conditions.
Cortisol Awakening Response Sample Collection
6-Tube Collection: Six cortisol collections in 24 hours is the most common method for assessing CAR. Start saliva collection within five minutes of waking for the day, followed by a second sample at 30 minutes, and a third sample at 60 minutes. The rest of the diurnal rhythm can be assessed at the normal time intervals – noon, evening and night. Click here for more collection instructions.
|Cortisol||Yes (6 tests)|