<unk>  refers to a class of tests performed where one substance is measured both before and after the administration of another substance to determine if the levels are stimulated <unk> ") or suppressed. They are most commonly performed in the evaluation of possible endocrine disorders. Certain tests are performed in the evaluation of multiple conditions, and not all listed substances may be measured in each test. Examples include: Test name Substance administered Substance measured Condition evaluated combined rapid anterior pituitary evaluation panel insulin, GnRH, TRH ACTH and cortisol, FSH, HGH, LH, prolactin, TSH hypopituitarism TRH stimulation test TRH TSH secondary hypothyroidism ACTH stimulation test ACTH cortisol, 17α-hydroxyprogesterone adrenal insufficiency, Congenital adrenal hyperplasia (21-hydroxylase, 3 beta) metyrapone panel metyrapone cortisol, 11-deoxycortisol adrenal insufficiency dexamethasone<unk>  test dexamethasone cortisol Cushing's syndrome captopril<unk>  test captopril aldosterone primary aldosteronism captopril challenge test captopril renin renal artery stenosis
Evocative/suppression testing
Contraction stress test
Provocation test
Combined intracavernous injection and stimulation test
Syndromic testing
Nonstress test
Videonystagmography
TRH stimulation test