TestWell Price
$259.99
Biotin (vitamin B7) is a water-soluble B vitamin involved in fatty acid synthesis, glucose metabolism, and amino acid metabolism. It's widely taken as a supplement for hair, skin, and nail health. Important note: biotin supplementation can interfere with many other blood tests (including thyroid, cardiac, and hormone tests), so it should be discontinued before lab work.
Sample Type
Blood draw
Fasting
Not required
Results In
3–7 business days
Performed By
Quest
1 biomarker tested
Your Biotin (Vitamin B7) results will include values for each of the 1 biomarker tested, along with reference ranges. Results are reviewed by a licensed physician before being released to your secure portal.
If any values fall outside the normal range, your report will include guidance on what that may mean and recommended next steps. You'll receive an email notification when your results are ready, typically within 3–7 business days.
Typical reference range layout
Lab reports show where your value sits relative to established reference intervals—your physician interprets this in context for you.
Stop biotin supplements at least 72 hours before testing.
TestWell Price
$259.99
No insurance needed · HIPAA compliant
Frequently ordered together
Customers who ordered Biotin (Vitamin B7) also added these for a more complete health picture.
Complete blood count with white blood cell breakdown — the gold standard for overall blood health screening.
$21.99
The primary screening test for thyroid function — detects both overactive and underactive thyroid.
$26.99
Measures your body's iron stores — the most sensitive early indicator of iron deficiency.
$24.99
Biotin (Vitamin B7)
$259.99