What Blood Tests Should I Get for Brittle Nails?
The top blood tests for brittle nails are ferritin, TSH, CBC, vitamin D, and a comprehensive metabolic panel. Iron deficiency is the leading nutritional cause of brittle nails, and hypothyroidism weakens nail structure. Both are common and treatable.
Possible Causes
Recommended Tests
Includes 3 of the 6 recommended tests below (not included: TSH, Vitamin D, CMP), plus 2 more.
$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: Iron & TIBC), plus 2 more.
All 6 recommended tests
$68.50 + one $18 order fee = $86.50 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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Content reviewed for accuracy by the JustLabs editorial team.