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A member asked:
What could be the cause of low acth but normal cortisol? acth is 4.9. cortisol total is 8.9 and cortisol free is 0.33
A doctor has provided 1 answer
Endocrinologist: If there is elevation of circulating cortisol by exogenous or endogenous factors, the acth level will be suppressed by a biological feedback mechanism. I'm unsure whether this explains your situation. An endocrinologist is best qualified to answer your question.
Answered 6/10/2021
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