Cortisol is a steroid hormone, in the glucocorticoid class of hormones, that prevents the release of substances in the body that cause inflammation. Cortisol test is performed on patients who may have malfunctioning adrenal glands. Cortisol level normally rises and falls during the day. It peaks its highest level between 6 and 8 AM and gradually falls, reaching its lowest point around midnight.
When cortisol level is measured, blood specimen is usually collected at 8 AM and again at 4 PM. For individuals that are active during the night and sleep during the day, cortisol values should be adjusted accordingly.
Specification
Working range - 1.0-25.0 ug/dL
Reference range - * Morning: 5-25 ug/dL
* Afternoon: 2.5-12.5 ug/dL
Storage condition - Cartridge: 2-30 ℃
Detection buffer: 2-8 ℃
Shelf life - 24 months