Which Supplement Brands Are Third-Party Tested?

We checked 7,882 supplement brands against NSF, USP, Informed Sport, and Informed Choice databases. Only 4,268 (54%) have any third-party testing — and just 615 hold a recognized certification.

If you have searched "is [brand] third party tested" for a specific supplement, you are asking the right question. The FDA does not approve supplements before sale, so third-party testing is the only independent way to verify that a product contains what the label claims and is free from contaminants.

This guide lists the supplement brands that are actually third-party tested, organized by certification type. Every brand listed here has been cross-referenced against official certification databases — not just marketing claims on a label.