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Independent testing. 501(c)(3) nonprofit.

Every label.
Verified.

We buy supplements, test them through independent labs, and explain what we find.

See the resultsFund a test – $250
How we test
White 3D supplement bottles and delivery boxes, leading into a laboratory with green-capped sample vials.
Supplements, bought independently.

Independent testing. Informed choices.

Products testedAcross two published studies
35
Published lab testsTriplicate repeats excluded
133
Funds one testYour gift makes it possible
250 dollars
Published studiesOpen for everyone to read
2

Explore the findings: ElectrolytesTHC beverages

How we count tests

133 lab panels: 28 electrolyte panels, 63 THC potency panels, 21 pesticide screens, and 21 residual-solvent screens. Each product, laboratory, and panel counts once; triplicate repeats and the fourth THC laboratory are excluded. Separate heavy-metal panels are not included because their count is not documented in the published tables.

Supported by

From the shelf.
Into the science.

Independent at every step. Open for everyone.

  1. We buy.

    Off the shelf and online, just like you do.

  2. Labs test.

    Multiple third-party labs check identity, purity, and potency.

  3. You see it.

    Good or bad, every result is public. We explain the science.

What we stand for

Science you can read
on the label.

A 501(c)(3) nonprofit making independent testing and its findings accessible to everyone.

Consumer Protection

Independent labs check the identity, purity, and potency of products bought online and in stores.

Evidence-Clear Communication

Clear explanations of product safety and function help people put the science to use.

Insight & Innovation

We explore new analytical tools and share what they reveal about product quality.

Results

See where we've
made a difference.

Two published studies. Every result open to you.

Published

Electrolyte product analysis

14 products studied

Explore the full product-by-product analysis.

Read the full results
Round 3 updatesBe first to read the results.

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Help shape what comes nextWhat should we test next?

Suggest a supplement, brand, or category for a future study.

Suggestions help guide future studies; submission doesn't guarantee testing. Please leave out personal or medical details.

The people

The people behind
the tests.

Meet the executive, scientific and advisory boards supporting our independent testing mission.

Showing all 14 board members.

Proud members of

  • American Herbal Products Association
  • United Natural Products Alliance
  • Natural Products Association
  • Council for Responsible Nutrition
  • American Botanical Council
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