What Blood Tests Should I Get for Poor Concentration?
The best blood tests for poor concentration are TSH, vitamin B12, ferritin, fasting glucose, and vitamin D. Thyroid dysfunction impairs cognition, B12 deficiency causes cognitive decline, and low iron reduces focus. Blood sugar swings also commonly impair concentration.
Possible Causes
Recommended Tests
$72 + $18 order fee · $90 all-in
The 7 tests ordered separately: $76.50 (save $4.50)
Includes 5 of the 6 recommended tests below (not included: Fasting Glucose), plus 2 more.
All 6 recommended tests
$64 + one $18 order fee = $82 all-in
When to See a Doctor
If your poor concentration 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.