The test-or-refund guarantee, and why we offer it.

Most peptide brands talk about lab testing. We've done the same — and the more time we spend in this market, the less convinced we are that the talk is what should matter to a buyer. The rest of the category claims third-party verification on every batch, and the consumer has no real way to confirm those claims. The trust is built on advertising rather than on consequences.

We'd rather flip that. Here's what we do instead.

What the guarantee is

Every kit you order arrives with a batch ID printed on the vial. That batch ID resolves to a public URL on this site — a permanent, dated record of the production purity result. The number on that page is the spec.

If you don't trust that number, send a vial from your kit to any reputable HPLC lab — Janoshik, Eurofins, MZ Biolabs, Catalent, Avomeen, your university's analytical core, your choice. If the lab's purity result comes back below the published spec, send us the report and the receipt and we'll refund the lab fee plus the full original order. No questions, no fine print, no return shipment required.

Why we offer it

Three reasons, in order of importance.

First, claims about quality are cheap. Marketing the COA, the third-party verification, the lab partnership — those are all things that cost almost nothing to put on a website. They're a credible signal until they're not. The way to actually filter the legitimate operators from the rest is to attach a cost to being wrong, and the most direct way to attach a cost is to put it on us.

Second, the buyer carries information we don't. We tested at production. You're testing the actual unit you're going to use, weeks or months later, after it's traveled through a supply chain. If something happened in transit or storage that we couldn't see, your test catches it. The guarantee captures that information rather than wishing it away.

Third, we'd rather not run continuous third-party COA programs and pretend they're free. The honest version: we test thoroughly at production, we publish that result, and we use the guarantee to keep ourselves accountable instead of running a marketing apparatus around per-batch verification we'd be tempted to game over time.

What it costs us if we're wrong

An HPLC purity test at a third-party lab runs $50–150 in 2026 depending on the lab and turnaround. A typical kit order in our catalog is $890–$2,290. Refunding both means a single false claim costs us $940 to $2,440, on top of the reputational signal of having missed.

That's the math. It's why we don't oversell purity, and it's why our published specs sit at honest values instead of inflated ones. If we said 99.5% on a batch that came in at 99.0%, we'd lose money to anyone who tested. So we don't.

How to claim it

• Order a kit. Receive it with the batch ID on the vial label.
• Note the published spec at /batch/[id] for that batch.
• Send a vial to a reputable HPLC lab of your choice.
• If the lab result is below the published spec, email us the lab report and the receipt.
• We refund the lab fee plus the original order, processed within 3 business days.

That's the whole policy. No category restrictions, no order-size minimums, no time limit beyond the kit's expiration date. If we said it, your lab can prove it.