Depression screening kits sold online or through consumer channels rarely provide a reliable diagnosis. Medical professionals warn against purchasing these test packages because they do not consistently identify depressive disorders. In clinical practice, a mental health professional evaluates symptoms in the context of medical history and daily functioning, rather than relying on a single score from a home test.
Depression can influence the body’s hormones, including cortisol, dopamine, and serotonin. Yet laboratory tests that measure hormone levels often stay within normal ranges even when depressive symptoms are present. Because of this, the recommended approach is to seek a professional evaluation rather than trusting hormone tests to diagnose depression.
During a clinical examination, clinicians distinguish different depressive conditions by examining symptom patterns, duration, and the level of impairment in daily life. The most common categories include major depressive disorder and persistent depressive disorder, with seasonal patterns recognized in some cases. This classification helps determine treatment options, prognosis, and whether additional assessment is needed.
Classic depression typically shows a persistent low mood, reduced activity, slowed movements and thinking, and a diminished ability to enjoy life. Some individuals present with a masked form in which depressive symptoms appear as physical complaints or ongoing pain. In both classic and masked presentations, test results are frequently inconclusive, and only a trained clinician can make an accurate diagnosis and tailor effective treatment.
Before seeking specialized care, many individuals try to recognize mood changes on their own. Screening tools, such as the Beck Depression Inventory, can provide a useful snapshot and help guide discussion with a clinician. It is important to remember that these tools are screening instruments and do not substitute for professional evaluation.
Screening scales help gauge symptom severity and monitor progress, but their results must be interpreted alongside the clinical interview and medical history. If scores indicate significant distress, a clinician will integrate these findings with other information and, when appropriate, collateral input from family or caregivers.
Self-screening can be a helpful first step, yet it should not replace a formal evaluation. Persistent sadness, loss of interest, changes in sleep or appetite, fatigue, concentration difficulties, or thoughts of self-harm lasting two weeks or more merit professional assessment.
Health systems in Canada and the United States emphasize integrated care for mood disorders. Primary care clinics often coordinate with mental health specialists, and telemedicine options can improve access. If symptoms worsen or safety concerns arise, emergency services or crisis lines should be contacted immediately.
Ultimately the aim is accurate diagnosis and effective treatment. Lab tests cannot capture the full complexity of depression, which involves mood, cognition, sleep, and physical symptoms. A careful clinical interview stays at the heart of assessment, guiding the choice of psychotherapy, medications, lifestyle changes, or a combination of therapies.