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Supplement Seal Check

Informed Choice

Banned-substance screening with monthly blind retail testing

Summary

Informed Choice is LGC's quality assurance program meant to minimize the risk of supplements being contaminated with banned and harmful substances. [1]

What it tests

Before certification, a paper-based manufacturing assessment and ingredient review, then lab testing of three samples across at least three production batches. [1]

After certification, at least monthly blind tests of samples bought at retail. [1]

What it doesn't cover

LGC says the key difference is testing frequency: Informed Sport tests every batch before sale, while Informed Choice tests products on a monthly blind testing schedule. [2]

Informed Choice's process page describes pre-certification testing of three samples across at least three batches, then at least monthly blind tests of samples bought at retail. [1]

Seals don't guarantee safety or effectiveness. [3]

How to verify a product

Look up on their site

Certified products get a page on the Informed Choice website listing all tested batch numbers. [1]

Sources

  1. Informed Choice (LGC) — The 4 Steps to Informed Choice Certification retrieved 2026-10-27
  2. Informed Sport (LGC) — Frequently Asked Questions retrieved 2026-10-27
  3. NIH Office of Dietary Supplements — Dietary Supplements: What You Need to Know retrieved 2026-10-27