PHQ-9 Depression Screening Tool — Self Assessment
Screen for depression severity online using the standardized Patient Health Questionnaire-9 (PHQ-9) clinical tool.
What is the PHQ-9?
The Patient Health Questionnaire-9 (PHQ-9) is a 9-question clinical instrument widely used by mental health professionals and primary care physicians to screen for, diagnose, and monitor the severity of depression.
Scoring and Clinical Interpretation
Each question evaluates the frequency of core symptoms over the past two weeks, scored from 0 (Not at all) to 3 (Nearly every day). Total scores are interpreted as follows:
- 0–4: Minimal or no depressive symptoms.
- 5–9: Mild depressive symptoms.
- 10–14: Moderate depressive symptoms.
- 15–19: Moderately severe depression.
- 20–27: Severe depression.
The final question assesses how these symptoms affect daily functioning, such as work, home responsibilities, or relationships.
Clinical Support
This tool is for screening purposes and does not replace a clinical diagnosis. If you score in the moderate-to-severe range or indicate thoughts of self-harm, consult a licensed mental health professional.