Peptide Sciences was one of the most-recommended US research peptide vendors for years. In early 2026 it shut down. The company has not said publicly why, and we won't guess.
Why it matters
Vendor risk in this category is real. Businesses that sell research compounds without careful, compliant copy and a clear chain of custody from supplier to lab to customer can disappear quickly, and their customers are left with no records.
How to evaluate a vendor
Wyoming, Delaware, and Nevada LLCs are searchable. Check.
Health claims or talk about dosing in humans are red flags.
A vendor that can't name its testing lab can't be checked.
A generic PDF for a compound is not a lot certificate.
Look for an access code or QR code on the certificate.
What we do
We sell only lots that pass independent testing. Every lot's full certificate is published before it ships, the lab is named, and the certificate carries the lab's access code so you can check it yourself. Our site copy is checked for health claims before it goes live. None of this means we'll never make a mistake, but when we do, we'll correct it in the open.
Every certificate behind every lot we sell is in our COA archive. For a step-by-step way to check us, read Is Vault Tech Labs Legit? How to Check Us Yourself.
No claims. No hype. Just the work behind the COA. Published before the box ships.