dexamethasone suppression test
Definition: a test for the detection and diagnosis of Cushing syndrome; following administration of 1.0 mg of dexamethasone at 11 p.m., normal people suppress plasma cortisol to low levels; patients with Cushing syndrome do not. Higher dose regimens distinguish between Cushing syndrome due to tumor and due to hyperplasia.
© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.