Hospital
$150+
Other Labs
$59
TestWell
$43.99
Vitamin B1 (thiamine) is essential for converting carbohydrates into energy and maintaining healthy nerve function. Deficiency can lead to beriberi or Wernicke-Korsakoff syndrome, conditions that affect the heart, nervous system, and brain. Thiamine deficiency is more common than often recognized, particularly among individuals with alcohol use disorders, chronic illness, bariatric surgery patients, and those on restrictive diets.
Sample Type
Blood draw
Fasting
Not required
Results In
3–5 business days
Performed By
Quest
1 biomarker tested
Your Vitamin B1 (Thiamine) 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 3–5 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.
No fasting required. No special preparation needed.
TestWell Price
$43.99
No insurance needed · HIPAA compliant
Frequently ordered together
Customers who ordered Vitamin B1 (Thiamine) 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
Vitamin B1 (Thiamine)
$43.99