What Blood Tests Should I Get for Depression?

The most recommended blood tests for depression are TSH, vitamin D, vitamin B12, CBC, and testosterone (in men). Hypothyroidism is a leading medical cause of persistent low mood. These tests identify treatable conditions that mimic or worsen depression, including vitamin deficiencies and anemia.

Possible Causes

Recommended Tests

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When to See a Doctor

If your depression is severe, rapidly worsening, or accompanied by alarming symptoms (chest pain, shortness of breath, high fever), seek immediate medical attention. Blood tests are a valuable first step, but they don't replace evaluation by a healthcare professional.

Frequently Asked Questions

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Content reviewed for accuracy by the JustLabs editorial team.