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

Dr. Donald Colantino answered

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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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

Dr. Donald Colantino answered

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Questions?

My cortisol + ACTH are both very low. I also have severe nausea, fatigue, and low blood pressure. My ACTH stim test showed that I do not have adrenal insufficiency. Could the low cortisol still be the cause of the nausea? If so, how do I raise it?