Cortisol (Stress hormone) adrenal glands
Cortisol is a hormone from the adrenal glands. It is needed to cope with stressful situations. But if the stress hormone is coursing through our veins for too long, this will result in forgetfulness and depression.
More about Cortisol
Cortisol is involved in regulating numerous processes related to the body's alertness. Too much cortisol leads to high blood pressure and elevated blood sugar levels, among other things. Low cortisol can lead to low blood pressure and severe weakness.
The concentration of cortisol normally varies throughout the day from high in the morning to low in the late afternoon. Write down for yourself the time you have your blood drawn; the results will give a reference value for the morning and a value for the afternoon.
Cortisol is a comprehensive hormone that has a day and night rhythm. Its concentration is higher in the morning than in the afternoon. Nutrition does not affect cortisol concentration, however, the time of day is very important in this. If the study is repeated more often, the curve becomes well visible.
In pregnancy, oral conceptiva and estrogen therapy, the Cortisol concentration in serum is increased.
Because the value varies throughout the day, please indicate the time of collection on the lab form. Avoid stress before and during blood sampling.
For clarity of the reference values, it is best to have your blood drawn before 10 am. The lab uses this result, if you had your blood drawn between 6am and 10am, it should be between 171 and 497 nmol/l.