What is the role of depression screening in the diagnosis of major depressive disorder (clinical depression)?

Updated: Aug 06, 2020
  • Author: Jerry L Halverson, MD; Chief Editor: David Bienenfeld, MD  more...
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Depression screening tests can be valuable, with the most widely one used being the Patient Health Questionnaire-9 (PHQ-9). It is important to understand, however, that the results obtained from the use of any depression screening or rating scales do not diagnose depression and may be imperfect in any population, especially in elderly patients.

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