i dont think it is good idea to take b blocker and do acth
stim test .
This test is used to diagnose or exclude primary and secondary adrenal insufficiency
, Addison's disease and related conditions.
In addition to quantifying adrenal insufficiency, the test can distinguish whether the cause is adrenal (low cortisol
production) or pituitary (low ACTH production).
The ACTH stimulation test is recognized as the gold standard assay of adrenal insufficiency, although this test is primarily used to determine the presence of Addison's disease and pituitary impairment.
b blocker may impair the test result ,so better to avoid it .