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==What can this indicate==
 
==What can this indicate==
A stress leucogram can be completely normal as part of the stress response.  It is caused by endogenous release of adrenaline/epinephrine which causes the release of cortisol from the [[Adrenal_Glands_-_Anatomy_&_Physiology|adrenal cortex]] - this causes the haematological parameters to change.  Adrenaline and then cortisol release can be triggered by pain, stress or excitement.   
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A stress leucogram can be completely normal as part of the stress response.  It is caused by endogenous release of Adrenocorticotrophic hormone (ACTH) which causes the release of cortisol from the [[Adrenal_Glands_-_Anatomy_&_Physiology|adrenal cortex]] - this causes the haematological parameters to change.  ACTH and then cortisol release can be triggered by pain, stress or excitement.   
    
A stress leucogram can also be seen in [[Cushing's Disease]] (AKA hyperadrenocorticism) where there is a pathological increase in the amount of cortisol released endogenously, or via iatrogenic injection of exogenous corticosteroids.
 
A stress leucogram can also be seen in [[Cushing's Disease]] (AKA hyperadrenocorticism) where there is a pathological increase in the amount of cortisol released endogenously, or via iatrogenic injection of exogenous corticosteroids.
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