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Updated: Aug 26, 2026

Fecal Glucocorticoid Analysis: Non-invasive Adrenal Monitoring in Equids
Published on: April 25, 2016
Changes in blood neutrophil/lymphocyte ratio related to adrenocortical function in the horse
Abstract:
Blood neutrophil/lymphocyte ratio and plasma cortisol levels were measured before and after (1) the injection of adrenocorticotrophic hormone (ACTH1-24) in 8 Thoroughbreds and (2) exercise in 5 Thoroughbreds in training. Plasma cortisol levels were significantly (P less than 0.01) increased within 60 mins of injection of ACTH1-24 and immediately after exercise. The mean neutrophil/lymphocyte ratio altered significantly (P less than 0.01) at 240 mins after ACTH1-24 administration and at 180 mins after a training gallop. A transient lymphocytosis occurred following exercise.
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