What Blood Tests Should I Get for Fatigue?
The best blood tests for fatigue are TSH, ferritin, vitamin D, CBC, and a comprehensive metabolic panel. These cover the most common medical causes of persistent tiredness, including hypothyroidism, iron deficiency, vitamin D deficiency, anemia, and blood sugar imbalances.
Possible Causes
Recommended Tests
$72 + $18 order fee · $90 all-in
The 7 tests ordered separately: $76.50 (save $4.50)
Includes all 6 recommended tests below, plus 1 more.
All 6 recommended tests
$67.50 + one $18 order fee = $85.50 all-in
When to See a Doctor
Seek immediate medical attention if your symptoms are severe, rapidly worsening, or accompanied by warning signs (chest pain, shortness of breath, high fever). Blood tests are a valuable first step, but they don't replace evaluation by a healthcare professional.
Frequently Asked Questions
Related Symptoms
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The essential blood tests to identify thyroid, iron, and vitamin causes of tiredness.
Content reviewed for accuracy by the JustLabs editorial team.