<P> Cortisol is a naturally occurring pregnane corticosteroid and is also known as 11β, 17α, 21 - trihydroxypregn - 4 - ene - 3, 20 - dione . </P> <P> In non-human animals, cortisol is often used as an indicator of stress and can be measured in blood, saliva, urine, hair, and faeces . </P>

The blood level of glucocorticoid and triggers a chain reaction