Adreno Cortico Trophic Hormone – ACTH – Plasma
In order to determine the cause of hypocortisolism & hypercortisolism this assay is carried out. In a patient with hypocortisolism, Primary adrenal insufficiency is indicated by an elevated ACTH. Secondary adrenal insufficiency are found to have normal levels from pituitary or hypothalamic causes. A suppressed value is consistent with cortisol producing adrenal adenoma, exogenous corticosteroid use and primary adrenal micronodular among the patients with hypercortisolism.
How to prepare for the test?
Blood should be drawn between 8 – 10 am.