A specific laboratory test for the diagnosis of melancholia. Standardization, validation, and clinical utility.

Published

Journal Article

Four hundred thirty-eight subjects underwent an overnight dexamethasone suppression test (DST) to standardize the test for the diagnosis of melancholia (endogenous depression). Abnormal plasma cortisol concentrations within 24 hours after dexamethasone administration occurred almost exclusively in melancholic patients. The best plasma cortisol criterion concentration, above which a DST result may be considered abnormal, was 5 microgram/dL. The optimal dose of dexamethasone was 1 rather than 2 mg. Two blood samples obtained at 4 and 11 PM after dexamethasone administration detected 98% of the abnormal test results. This version of the DST identified melancholic patients with a sensitivity of 67% and a specificity of 96%. Baseline nocturnal plasma cortisol concentrations were not useful. Abnormal DST results were found with similar frequency among outpatients and inpatients with melancholia; but they were not related to age, sex, recent use of psychotropic drugs, or severity of depressive symptoms. Extensive evidence validates this practical test for the diagnosis of melancholia.

Full Text

Cited Authors

  • Carroll, BJ; Feinberg, M; Greden, JF; Tarika, J; Albala, AA; Haskett, RF; James, NM; Kronfol, Z; Lohr, N; Steiner, M; de Vigne, JP; Young, E

Published Date

  • January 1, 1981

Published In

Volume / Issue

  • 38 / 1

Start / End Page

  • 15 - 22

PubMed ID

  • 7458567

Pubmed Central ID

  • 7458567

International Standard Serial Number (ISSN)

  • 0003-990X

Digital Object Identifier (DOI)

  • 10.1001/archpsyc.1981.01780260017001

Language

  • eng

Conference Location

  • United States