Adrenal Fatigue and Cortisol Levels
SWALE said:
If somneone cuts you off in traffic on the way to the draw point, that will falsely elevate your cortidol level. So may the sight of the needle.
From my point of view, that is not a falsely elevated cortisol level. It is exactly what you want.
However, it is important to take into account the patient's psychological status and stress during the day to help interpret the cortisol level - to help determine if an appropriate adrenal response to stress is occurring.
Under stress, it is important that the cortisol level be elevated. If it is not, then that certainly helps diagnose adrenal fatigue. If it is elevated, then one cannot for certain diagnosis adrenal fatigue unless there are more data points - i.e. more tests done.
Adrenal gland output is not static - it varies from moment to moment. The adrenal glands respond microsecond-to-microsecond to the signals received from the brain via the sympathetic nervous system and the hypothalamus-pituitary gland. The adrenal glands then produce the necessary neurotransmitters/hormones to rally the body's resources, to help the brain respond to whatever stress the person experiences. The adrenal glands provide on-demand energy to help a person respond to stress.
Stress is anything that breaks homeostasis. It can be as little as lifting a pen, to extremes such as repeated traumatic rapes in childhood (where the memory of which is indelible and is constantly involuntariliy relived like a movie overlying one's present experience).
In adrenal fatigue, with constant exposure to stress signals, the adrenal glands become unable to respond with enough of the neurotransmitters/hormones needed to help the brain respond to stress. It sputters. There may be times, usually short, where it is adequate; and frequent times when it is inadequate. There often is no on-demand energy generation.
The best test, then, for a sputtering adrenal gland, is continuous monitoring (such as with a cardiac Holter monitor, or portable EEG device) which would allow the clinician to correlate adrenal gland function with a person's psychological status and stresses during a day. This can then be drawn on a chart as three curves with the time of the day as the horizontal axis.
However, we do not have this yet. What we have are single points on the graph. Often we only have one point - the morning cortisol. That makes it difficult to determine what the adrenal status is.
I like the saliva test in that
1. It is fairly low stress (essentially - chewing on a cotton wad to saturate it with saliva) and thus itself does not interfere as much with the measurement process (The Heisenberg Uncertainty Principal comes to mind).
2. It can be easily done multiple times a day - thus providing more data points to help determine if adequate adrenal function is present.
3. It can be done where it matters most - where a person lives, works, etc. in whatever activity the person is trying to accomplish (similarly to how it is important to measure blood pressure at home, at work, and in whatever activities one has - to gain a better understanding of a person's hypertensive response. When my patients see me, their blood pressures, which are normal in their primary care provider's office, is high in mine - particularly since they have to talk about highly stressful experiences when they see me that they do not have to recount with their primary care provider).
With a patient journal of their activities and psychological status, one has a great correlation between adrenal output and stress at multiple times in a day - multiple data points to give one an idea of the adrenal response curve. Adrenal fatigue sticks out like a sore thumb when this is done.
Contrast this with a blood test, where a person has to go to a lab, get poked with a needle, and can probably only do this at most two times in a day. At least with a saliva test, you can get four data points easily - eight or more if you want to be obsessive. The stress of the blood stick is an artificial one and will vary depending on the person. With only one or two data points, other labs are important to help obtain clues if there is adrenal fatigue - e.g. DHEA-s, progesterone level, sodium, potassium, etc.