Supplement Cert Directory

Thorne

Is Thorne third-party tested?

Yes — as of 2026-09-21, Thorne holds 255 third-party certifications across 2 independent testing programs: NSF (dietary supplement certification), NSF Certified for Sport. Every certification below links to the certifying body's official listing so you can verify it at the source.

Registries checked (as of 2026-09-21): Informed · NSF (Products are tested for ~270 substances banned by most sports organizations.)(Products are tested for label accuracy and the absence of contaminants.) · USP · Labdoor · BSCG

Certified categories: amino acids, ashwagandha, collagen, creatine, electrolytes, fish oil, greens, iron, magnesium, multivitamin, pre-workout, protein, testosterone, turmeric, vitamin b12, vitamin c, vitamin d, zinc

Last verified: 2026-09-21

SupplementSentry found certifications on 203 of Thorne's products in our index.

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Certification breakdown