ACTH Plasma LabCorp

ACTH plasma test is a pituitary function test, useful in the differential diagnosis of Cushing syndrome, ectopic ACTH syndrome (i.e. carcinoma of lung, islet cell tumors, carcinoid tumors, medullary carcinoma of thyroid, Addison disease, hypopituitarism, and ACTH-producing pituitary tumors (i.e. Nelson syndrome).