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Research use only. Not for human consumption. Not medical advice. This is an affiliate site — disclosure.

the used-car history report, for research peptides

Before you trust a vial, check the paperwork.

We checked 10 lab reports from one vendor. 8 were real. 6 were below the purity number on the listing. Here's how to check yours — and we'll check one for you.

Get the 6-document checklist See a real background check →

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Research use only · not for human consumption · not medical advice.

I'm looking at a vendor

Check a vendor

Business record, lab, lots looked up at the lab, listing errors — for every vendor on file, including the ones that pay us.

Vendors on file →

I have a lot number or a link

Check a lot

Paste it. We pull the certificate, look it up at the lab, and reply personally within 48 hours. Free, any vendor.

Request a background check →

I'm new to this

Learn the basics

What a peptide is, what "research use only" means, and what each compound has actually been studied for — in people, mice, or a dish.

Peptide 101 →

10 lots checked

every one looked up at the lab

8 verified

found in the lab's database, byte-identical

6 below listing claim

real lots, purity under the "≥99%" on the page

2 vendors on file

check log updated 30 Sep 2026 · see every row →

What is a peptide, in one picture?

Your body builds proteins out of amino acids, like beads on a string. A peptide is a short string — anywhere from 2 to about 50 beads. A protein is a long one.

Research peptides are short strings made in a lab. Some copy pieces of things your body already makes. Most have only been studied in cells or animals. None on this site are approved for human use.

That last sentence is the whole point of this site.

Peptide 101: what each one has actually been studied for →

How a background check works

Same idea as checking a used car before you hand over money. We don't test the vial ourselves — we check the record, and we show you how to check it too.

step 1

Pull the record

FDA and WADA status. What published studies claim — and whether they were in people, mice, or a dish. Who wrote them.

step 2

Match the lab report

A PDF on a vendor's site is a claim. The same document in the lab's own database is a record. We look it up and compare, lot by lot.

step 3

Report it plainly

Three lights. No verdicts, no "best for". If the vendor we link to fails a check, we say so — same rules for everyone.

The 6 documents worth asking for

If a vendor can't produce these, you don't have documentation. You have a label.

Lot ID

The batch number — on the vial, on the listing, on the report. All three must match.

Certificate of Analysis

The lab's report for that lot: what it is, how pure, tested how.

Lab lookup

The same report, found in the lab's own database. This is what makes a PDF real.

Who you're dealing with

The legal entity, its state, and whether it's the company it looks like.

Identity confirmed

The lab checked that the molecule is what the label says. "TB-500" can mean two different things.

Regulator status, dated

FDA and WADA move. What was true in 2023 isn't true today. We re-check quarterly.

free · one per person · we run 10 a week

Want us to check one for you?

Paste a product link or a lot number. We pull the lab report, look it up at the lab, and reply personally within 48 hours with the three lights. Any vendor. Research use only.

You don't need to understand chemistry to check paperwork.

Vendors on file

Same checklist for every vendor, including the two that pay us a commission. Failures publish. A vendor you don't see here hasn't been checked — request it.

Utah · checked 15 Sep 2026

Peptide Restore, LLC

Business record: active Utah LLC
Lab reports: 10 checked, 8 verified at the lab
Listings: a few details differ from the lab numbers

Background check →

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Capstone Holdings LLC · opened 28 Sep 2026

Capstone Peptides

Business record: named in its own terms; state registry not yet read
Lab reports: 0 checked — site gated
Domain: registered May 2026

Background check →

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We may earn a commission if you buy through this link, at no extra cost to you.

Three lights: green = verified at the source · amber = something doesn't match or can't be found · grey = nothing on file. Prices are not listed here; they change monthly and the lot documentation is what matters.

Questions people actually search

Is Peptide Restore legit?

We don't issue verdicts. On file: an active Utah LLC, a named third-party lab whose database returns 8 of the 10 certificates we checked, and a few listing details that don't match the lab numbers. Read the check →

Is Capstone Peptides legit?

Too early to say much: the operator is named in its own partner terms, the domain is from May 2026, and no certificate has been checked yet because the site is gated. Most rows say "nothing on file" — that is a result, not a verdict. Read the check →

How do I verify a COA?

Open the certificate the vendor posts, copy its search code, enter it at the lab's public lookup, and compare the two files field by field. Five minutes, no chemistry. Step-by-step →

What do the three lights mean?

Green: the lab's own database returned the same document. Amber: the lab couldn't find it, or something doesn't match. Grey: no document exists to check.

Do you sell peptides?

No. We don't sell, ship, or handle any product, and nothing here is approved for human use. We check paperwork.

Do you earn money from vendors?

Yes. We are an affiliate of Peptide Restore and Capstone Peptides, and we may earn a commission on orders placed through our links to them, at no extra cost to you. The same checklist applies to every vendor. Their failures publish. Full disclosure →

one page, printable

The 6-document checklist

What each document proves, what it doesn't, and where to find it. Research use only.

We may earn a commission on orders placed through our links, at no extra cost to you. Research use only.

Home Peptides How to read a COA Testing Research use only

Research use only. Not for human consumption. Products referenced on this site are sold by the vendor as research chemicals. Nothing here is medical advice, a recommendation to use any compound, or a substitute for a licensed professional.

Affiliate disclosure. We are an affiliate of two vendors: Peptide Restore, LLC (Utah) and Capstone Peptides (Capstone Holdings LLC). We may earn a commission on orders placed through our links to them, at no extra cost to you. We do not sell, ship, or handle any product, and the same documentation standard applies to every vendor we link to.

Vendors: Peptide Restore, LLC (Utah) — not affiliated with Restore Peptides (New Mexico) · Capstone Peptides (Capstone Holdings LLC). Vendor statements about origin are not independently verified. · COA lab on file: Freedom Diagnostics · Editor: Chas Dearie · Last reviewed: 30 Sep 2026

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We may earn a commission if you buy through this link, at no extra cost to you.