This is a screening measure to help you determine whether you might have depression that needs professional attention. This screening tool is not designed to make a diagnosis of depression but to be shared with your primary care physician or mental health professional to inform further conversations about diagnosis and treatment.
Reference: Anxiety and Depression Association of America - Based on Patient Health Questionnaire-9 (PHQ-9) Developed by Drs. Robert L. Spitzer, Janet B.W. Williams, Kurt Kroenke, and colleagues, with an educational grant from Pfizer Inc.