Medifast, Inc.
Is Medifast, Inc. third-party tested?
Yes — as of 2026-08-17, Medifast, Inc. holds 2 third-party certifications across 1 independent testing program: NSF (dietary supplement certification). Every certification below links to the certifying body's official listing so you can verify it at the source.
Registries checked (as of 2026-08-17): Informed · NSF · USP · Labdoor · BSCG
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