Thorne
Vitamin D Test
At-home finger-prick test for serum 25(OH)D
Approximate price. Subject to merchant changes.
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Reader discount
10% off any Thorne order
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- Serving size
- Single-use kit
- Goal
- immunity · longevity
- Category
- Daily Supplements
The review
Why we put this on the shelf.
The single most actionable lab test for most adults. Measures circulating 25-hydroxyvitamin D, the form clinical labs use, and returns a personalized dosing recommendation to reach optimal range.
We carry Vitamin D Test because Thorne sets a bar most consumer-facing supplement brands don't clear: NSF-certified manufacturing, in-house clinical research with Mayo Clinic and the Mayo Clinic Sports Medicine team, and individual batch testing for purity and potency.
Thorne's at-home tests use the same CLIA-certified labs your doctor would order from — but they bypass the appointment and come back with personalized supplement protocols based on your numbers.
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