The United States Preventive Services Task Force (USPSTF) recently recommended that all adults in general practice be screened for major depressive disorder and that everyone aged 19-64 be screened for anxiety disorders, including disorders not common in general practice.12 This would involve administering depression and anxiety symptom questionnaires to all patients without a psychiatric diagnosis, classifying positive and negative results, providing comprehensive assessments to those with positive results, and discussing and implementing any indicated treatment.3Decisions to initiate screening programmes should be based on high quality evidence of sufficient benefits to justify the harms that might be experienced by those who are screened and the consumption of resources that would be unavailable for other healthcare services.4 An effective mental health screening programme would require that patients agree to be screened; receive a screening test; get an accurate diagnosis if they have a positive result; and can then access treatments they agree…