Life Extension
Research-driven, batch COAs · Mid-range
A research-focused brand that publishes a Certificate of Analysis for every product batch and third-party tests for purity and potency.
Quality programmes this brand reports
As published by the brand. Where the certifier keeps a public registry — NSF, USP, Informed Sport — look up the specific product there: a company-wide claim is not a batch certificate.
Known for
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Life Extensiontesting & certifications — FAQ
Is Life Extension third-party tested?
Life Extension reports the following quality programmes: Batch Certificate of Analysis, Third-party tested. Third-party testing checks a product's identity, potency, and purity against its label. We reproduce what the brand publishes; where the certifier keeps a public registry (NSF, USP, Informed Sport), look the specific product up there before relying on it — a company-wide claim is not a batch certificate.
How we assess supplement brands
Supplements aren't FDA recall-rated like prescription drugs, so we don't assign a recall-safety score here. Instead we report what a brand is independently verified for — NSF, NSF Certified for Sport, USP Verified, Informed Sport, cGMP, and batch testing — the signals that actually separate supplement quality. This is general reference, not medical advice; always consult a professional.