Right laboratory, right company, working verification code, and a batch number that belongs to a different bottle. We found one on our own site while writing this.
Real, and about something else
What the report says
20mg
lot RETA20-0803
content 20.22 mg
What the vial says
30mg
lot RETA30-0803
a different document entirely
Seven certificates downloaded and checked, 11 September 2026
Everything can be true about a certificate and it can still be the wrong certificate.
The laboratory is real. The company that paid for the test is real. The purity figure is genuine. The verification code works, and typing it on the lab's own site returns exactly the document you were shown.
And none of that answers the question you actually have, which is narrower than it sounds:
Is this report about the bottle I am about to buy?
A report describes one sample, sent on one day, from one batch. It says nothing about any other batch, any other size, or anything made after it. The moment a seller shows the same document beside a different product, the document stops being evidence and starts being decoration.
Nobody has to be dishonest for this to happen. It is usually an ordinary shortcut: one test was paid for, and the file gets attached wherever a certificate is expected.
They are easy to spot once you know they exist.
Certificate batch does not match the batch on the page
The commonest one. A report from an older run, kept up while the stock behind it has turned over.
A 10mg report shown beside a 30mg product
Same compound, different fill. The identity carries over. The amount does not, and the amount is half of what a report is for.
One certificate used across a whole range
A seller pays for one test and hangs it on everything. This is the version that should end the conversation.
All three produce the same experience for a buyer: a document that looks like proof, checks out when verified, and is about something else.
American Peptides / 11 September 2026
A page that asks you to run a check should run it first and show the result, including when the result is boring.
On 11 September 2026 we took every Retatrutide certificate one seller publishes. American Peptides lists seven, each labelled with a fill size and a lot: 10mg, 20mg, 30mg, 48mg, 60mg, and two older 10mg and 20mg lots. We downloaded all seven and checked them against their own labels.
Seven distinct files. No two links served the same document, which is the first and cheapest failure to rule out. A seller reusing one report across three sizes shows up here immediately, and this one does not.
The sizes matched. The certificate behind the 20mg link reads Retatrutide
20mg, lot RETA20-0803, content 20.22 mg. The one behind the 30mg link reads
Retatrutide 30mg, lot RETA30-0803, content 30.94 mg, and the photographed
vial on it is labelled 30MG.
That is a pass, and it is what a pass looks like: dull, checkable, and over in a few minutes.
We are showing you a seller that passed rather than naming one that failed, because the point is the method. The method works whoever you point it at, and you do not need us to run it for you.
Open the certificate and read the fill size on it. Then read the fill size on the page you are buying from. If the report says 10mg and the listing sells 30mg, the identity carries over and the amount does not.
Ask any seller for the report that belongs to the size in your basket. It is a fair question and it takes them a second to answer.
This works on any seller. It is the check almost nobody runs, because it requires looking at two things at once rather than one thing carefully.
When the parcel arrives, compare the batch printed on the vial label against the batch on the certificate you were shown. That is the only comparison that closes the loop completely, and you can only make it after you have paid, which is why the four checks above matter first.
No batch code on the certificate at all. A certificate with the batch blanked or cropped. The same document appearing under several different products. A page selling one size while the report describes another and nothing on the page mentions it.
This check is narrow on purpose, and it is worth being clear about what it leaves open.
It answers one question completely: whether the evidence in front of you is about the thing in front of you. Most pages in this market never get that far.
Run the four comparisons on whoever you are considering. When we probed twenty sellers in September 2026, twelve published no certificate page at all, which is the fastest possible answer there is.
Every seller looks the same on the good day. Four things decide what happens on the bad one, and all four are published before you order if you go and read them.
Read the seller's own published pages, not their marketing, and none of these terms were written by us.
We will send them as a one page sheet, in plain language, so you can run them on any seller and any certificate, size against size and lot against lot.
You are on the list.
The four comparisons come by email, as one page you can print.
Seven certificates, seven files, every size matched.
It follows once our list is live, and nothing else is sent. We do not sell peptides and we are not going to email you about any.
One email with the sheet. Unsubscribe in one click. We do not share addresses.
Before you go
One sheet, in plain language, that you can run on any seller in any country. One column filled in from a published certificate, and one left empty for the seller you already have open.
You are on the list.
The sheet comes by email, as one page you can print.
Nothing else follows it. We do not sell peptides and we are not going to email you about any.
One email with the sheet. Unsubscribe in one click. We do not share addresses.