PHQ-9 Depression Screening: What Your Score Means
Understanding the most widely used depression screening tool.
The Patient Health Questionnaire-9 (PHQ-9) is a 9-item screening tool used worldwide to assess the severity of depression symptoms. It is quick, free, and based on the DSM-5 diagnostic criteria for major depressive disorder.

How the PHQ-9 Works
Each of the 9 questions asks how often you have been bothered by a specific symptom over the last 2 weeks. Responses are scored from 0 (not at all) to 3 (nearly every day).
Score Interpretation
| Score | Severity | Action |
|---|---|---|
| 1–4 | Minimal depression | Monitor; self-care |
| 5–9 | Mild depression | Consider counseling or lifestyle changes |
| 10–14 | Moderate depression | Recommend professional evaluation |
| 15–19 | Moderately severe | Active treatment likely needed |
| 20–27 | Severe depression | Prompt professional intervention |
Question 9: Suicidal Thoughts
Question 9 specifically asks about thoughts of self-harm. A score greater than 0 on this question should always prompt a conversation with a mental health professional, regardless of the total score.
Limitations
The PHQ-9 is a screening tool, not a diagnosis. Medical conditions (e.g., thyroid disorders), medications, and situational stress can all affect scores.
Take the free PHQ-9 test here.
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