Why We Test One Vial From Every Order
Last updated June 7, 2026
Most quality claims in this market rest on a catalog COA: one document, shown once, applied to everything sold afterward. It is better than nothing, but it answers a different question than the one a buyer actually has. The per-order model exists to answer the real question.
The gap in a catalog COA
A catalog COA describes a batch that was tested at some point in the past. Because quality varies between runs, it cannot speak for a run produced later, and it certainly cannot confirm the specific units in your parcel. The buyer is left to assume that the catalog result still applies.
The per-order model
Test what ships
In this model, a customer can route an order through an independent US lab that pulls one vial from the order for HPLC and mass-spec analysis on the way to the customer. Because the lab is independent, the result avoids the conflict of interest described in third-party vs vendor testing. The two core results — identity and purity — are measured on the actual shipment.
Why results are published
A result locked in a private PDF is hard to trust and easy to edit. Publishing each result to a public record, tied to the batch code, makes the data auditable: anyone can look it up, and the history accumulates into a quality track record per product. On Peptuvia, results appear on the batch verification page and roll up into each product's public quality score.
What testing does and does not do
Testing reports analytical quality for research purposes. It confirms what a sample contained — identity, purity, and contaminant screens like endotoxin and heavy metals. It does not make a product safe, and it does not authorize human or animal use. The value is honest information, not a permission slip. To see how the lab network is structured, visit the testing page.
Frequently asked questions
Why test a vial from every order instead of relying on a catalog COA?
A catalog COA describes a batch that was tested in the past. Pulling and testing a vial from the actual order verifies the specific units shipped, closing the gap between a general claim and what a buyer receives.
Does testing every order guarantee safety?
No. Testing reports analytical quality — identity, purity, and contaminants — for research purposes. It does not make a product safe or authorize any human use.
What happens to the results?
On Peptuvia, each independent result is published to a public per-product quality record tied to the batch code, so the data is auditable rather than locked in a private document.
For Research Use Only. All products are sold as research chemicals for in-vitro laboratory study. Not for human consumption, medical, veterinary, or household use.