# Third-Party Testing Explained

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Third-Party Testing Explained This glossary page defines third-party testing. It does not verify a product or teach the complete certification check. For that workflow, use how to verify a third-party testing claim. Quick answer Third-party testing means an organization outside the supplement company evaluated a product, batch, facility, or claim. The phrase alone does not state who performed the work, what was tested, which batch was covered, or whether a result is publicly verifiable. Testing can examine identity, potency, selected contaminants, manufacturing systems, or banned substances. It does not prove that the supplement is effective, necessary, or suitable for a specific person. What the phrase may refer to Testing objectExample question Product or batchDid measured identity, potency, or selected contaminant results meet a specification? Facility or manufacturing systemWas a production process audited against a standard? Sport certificationWas the product screened under a named banned-substance program? When the definition is not enough A shopping decision needs a named organization, a stated scope, a batch or certificate connection, and a way to verify the claim. Use the third-party testing verification guide to check those fields. FAQ Does third-party tested mean FDA approved? No. FDA does not approve dietary supplements for safety and effectiveness before they are sold, and a third-party claim is not FDA approval. Does third-party testing prove a supplement works? No. Testing may verify selected quality attributes, but it does not establish clinical effectiveness or personal suitability. ReferencesFDA 101: Dietary SupplementsNSF: Dietary Supplements Update NoteLast reviewed and updated on July 22, 2026. Narrowed this glossary page to the term definition and moved certification and batch-claim verification to the quality guide. Publisher Trust NotesPublisher: Supplement Explained Editorial TeamReview model: Editorial evidence review; clinician review is shown only when a named clinician is listed.Last reviewed: July 22, 2026Last updated: July 22, 2026Editorial Policy | How We Review Evidence | DisclaimerUse: Informational only. Not personal medical advice.