Creatine Purity Verified: Third-Party Testing Results for PeakFusion

updated October 2026

Yes. PeakFusion Micronized Creatine Monohydrate is independently tested every production lot, and the current lot, B25I013, came back at a 100.8% assay against a 99.9% minimum specification, with clean results across heavy metals and microbiology too. The rest of this page shows exactly what was tested, what the numbers mean, and where to see the underlying report yourself.

What the Current Lot Shows

Lot B25I013 was tested on March 4, 2026 by an accredited independent laboratory using liquid chromatography, one of the most accurate methods available for measuring supplement composition. Independent means the lab has no financial tie to PeakFusion. Here is the full result set, not just the headline number:

Every one of these rows traces back to the lot's own Certificate of Analysis, published in full on the lab results page, not summarized or selectively quoted.

What a 100.8% Assay Actually Means

Assay measures the concentration of the labeled compound in the sample. The target is 99.9% or higher, and this lot measured 100.8%. That is not evidence the product contains more active ingredient than labeled. It reflects a result above the minimum specification, inside the normal analytical variance the testing method allows. In practical terms, the lot met its assay specification with room to spare.

This is also why a single number from one lot should not be read as a permanent fact about the product. Lot numbers change, and so do their results. Before citing a figure anywhere, check it against the current lot on the lab results page, since a result from a retired lot does not carry over to the next one.

Why Purity Testing Matters for Creatine Specifically

Creatine is one of the most researched supplements available, but that research assumes a clean, accurately dosed product. Lower quality raw material can carry residual solvents, unreacted intermediates, or contamination from the manufacturing process. None of that shows up by looking at the powder. It shows up in testing.

Verified purity is what makes the rest of the creatine research actually apply to what is in the tub. Consistent dosing across servings, a result that matches the label, and no unwanted byproducts are what separates a tested product from one that simply claims to be tested. PeakFusion Micronized Creatine Monohydrate is tested on this basis every lot, not on a one-time or occasional basis.

Built on the Same Standard Every Lot

Testing is one layer of a larger system. PeakFusion creatine is manufactured in an FDA-registered, cGMP-compliant U.S. facility under 21 CFR Part 111, and every production lot carries its own Certificate of Analysis from an independent lab with no financial relationship to PeakFusion. That is a different standard than implying federal pre-market approval, which no supplement carries, and PeakFusion does not describe its products that way.

If you want to see how to actually read one of these reports line by line rather than take the summary on faith, the guide to reading a Certificate of Analysis walks through it, and what third-party tested actually means on a label covers the difference between a real lab report and a marketing badge. The bottle itself also carries a scannable label tied directly to the current lot's results.

Frequently Asked Questions

What does third-party tested actually mean?

It means the testing lab is independent of PeakFusion, with no financial relationship, rather than PeakFusion checking its own product internally and reporting the result. That independence is what makes the number verifiable instead of self-reported.

Does a 100.8% assay mean the product is stronger than labeled?

No. It means the sample measured slightly above the 99.9% minimum specification, within the normal variance the testing method allows. The specification is a floor the lot has to clear, not a target to land on exactly.

Is every lot tested, or just this one?

Every production lot gets its own independent test and its own Certificate of Analysis. Results are lot specific, which is why a figure from an older lot should not be quoted once that lot sells through.

Where can I see the actual lab report, not just this summary?

The full Certificate of Analysis for the current lot is published on the lab results page, and the current product label includes a scan code that links straight to it.

Does purity testing include things like heavy metals and bacteria, or just the creatine itself?

Both. Along with the assay result, each lot is also screened for heavy metals (lead, arsenic, cadmium) and microbiology (total plate count, yeast and mold, and specific pathogens including E. coli and salmonella). The full table above is this lot's actual result set.

Shop This

PeakFusion Micronized Creatine Monohydrate is $34 one time, or $28.90 on subscribe and save, delivered every 7 weeks at 15% off. The Trinity Stack bundles creatine with the Complete Multivitamin and Vitamin D3 for $85 as a one-time purchase (it does not carry a subscription option itself), and it clears the $75 free U.S. shipping threshold on its own. Many customers use the stack as the entry point, then subscribe to each product individually afterward so every bottle refills on its own schedule.

Shop Micronized Creatine Monohydrate

Training drives the results. Verified purity just means you can trust what is actually in the scoop.