Question 1

What is the PHQ-9 test?

Accepted Answer

The PHQ-9 (Patient Health Questionnaire-9) is a clinically validated 9-question screening tool used by doctors and mental health professionals to assess the severity of depression. It measures how often you have experienced symptoms like low mood, sleep changes, and loss of interest over the past two weeks.

Question 2

How is the PHQ-9 scored?

Accepted Answer

Each of the 9 questions is scored 0–3 (Not at all, Several days, More than half the days, Nearly every day). Total scores range from 0–27: 1–4 is minimal depression, 5–9 is mild, 10–14 is moderate, 15–19 is moderately severe, and 20–27 is severe depression.

Question 3

Is the PHQ-9 questionnaire accurate?

Accepted Answer

The PHQ-9 has strong clinical validity and is widely used in primary care settings. However, it is a screening tool, not a diagnostic instrument. A positive screen should be followed up with a licensed mental health professional for a proper evaluation.

Question 4

Can I use the PHQ-9 test online for free?

Accepted Answer

Yes. This tool provides the full PHQ-9 questionnaire at no cost. Your responses are processed entirely in your browser and are never stored or transmitted to any server.

Question 5

What should I do if my PHQ-9 score is high?

Accepted Answer

A high score (10 or above) suggests it may be helpful to speak with a doctor or mental health professional. This screening tool is a starting point for a conversation, not a final answer. If you are in crisis or having thoughts of self-harm, please contact the 988 Suicide and Crisis Lifeline by calling or texting 988.

Question 6

Can this tool diagnose depression?

Accepted Answer

No. The PHQ-9 is a screening instrument, not a diagnostic tool. Only a qualified healthcare professional can diagnose depression through a comprehensive evaluation that considers your full medical history, symptoms, and circumstances.

Question 7

How often should I take the PHQ-9?

Accepted Answer

Some people find it helpful to complete the PHQ-9 periodically (e.g., every 2–4 weeks) to notice patterns over time. You can share results with your healthcare provider to support ongoing conversations about your mental health.

Question 8

Is my data stored or shared?

Accepted Answer

No. All scoring happens entirely in your browser using client-side JavaScript. Your answers are never sent to any server, stored in any database, or shared with anyone. When you close or reset this page, your responses are gone.

PHQ-9 Depression Self-Check

Before you begin

Clinical References

Related Screening Tools & Guides

What Is the PHQ-9 Depression Screening?

How Is the PHQ-9 Scored?

What Do My PHQ-9 Results Mean?

Before you begin

Clinical References

Related Screening Tools & Guides