Independently tested by Janoshik AnalyticalBatch-level Certificates of AnalysisShips across the USATracked delivery to the UAEIndependently tested by Janoshik AnalyticalBatch-level Certificates of AnalysisShips across the USATracked delivery to the UAE
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DOCUMENTATION TOOL

Check a Certificate of Analysis

Answer each question against the certificate in front of you. The tool scores what the document establishes, names what it leaves open, and writes the questions to send back to the supplier. Nothing is uploaded and nothing is stored: it runs entirely in your browser.

There are two separate questions to ask about any certificate. Is the document what it claims to be, and is it about the vial you are being sold? A certificate can be entirely genuine and still cover a batch produced eighteen months ago. The checks below cover both.

01

The document itself

Whether the file in front of you is a certificate as issued, or a picture of one.

Did the supplier send an original PDF, rather than a screenshot, an image or a panel pasted into a product listing?Load-bearing
Is the analysing laboratory identified by name and by its own contact details, not only by a logo?Load-bearing
Does the certificate carry a report identifier issued by the laboratory, separate from the supplier's batch code?
Is the certificate issued on the laboratory's own documentation rather than on supplier letterhead alone?
02

The link to your vial

The check almost nobody performs, and the one that catches substitution rather than forgery.

Does the certificate state a unique batch or lot reference?Load-bearing
Does that batch reference match the vial label, or the batch you have been quoted, character for character?Load-bearing
Does the certificate cover one batch, rather than several batches under a single set of results?
Is the compound named in full on the certificate, matching the vial label exactly?
Is the nominal vial size or fill weight stated?
03

The measurement

A result is only readable next to the method that produced it and the trace it came from.

Is the analytical method named, for instance HPLC, rather than a result given on its own?Load-bearing
Is identity confirmed by a stated method, separately from purity?
Is purity reported as a single figure from one run, rather than as a range?
Is a chromatogram included, not only the summary figures?
Do the chromatogram's axis labels, retention time and scale read consistently with the figures summarised above them?
04

Dates and relevance

A certificate can be entirely genuine and still be about material you will never receive.

Is a test date printed on the certificate?Load-bearing
Is this the certificate for the batch you would actually be shipped, rather than an earlier one?Load-bearing
Does the test date fall before the batch shipped rather than after it?
Is the figure specific to this batch, rather than one number published across the supplier's entire catalogue?

What each field on a COA means

Field by field, what a certificate should carry and how to check it against the vial.

Verifying a COA is genuine

Confirming a document with the laboratory that issued it, and the red flags worth knowing.

Compare several suppliers

Record what each one sent back, score every reply on the same points, and see the gaps side by side.

Request an Eluvyne certificate

The certificate for the batch currently in stock, so you can run these checks on ours.

This tool evaluates documentation only. It makes no assessment of any material, gives no usage, dosage or handling guidance, and its output is not a verification of any supplier or product. A purity figure belongs to the single batch it was measured on. Read our compliance position.

Frequently asked questions

How do I check if a peptide Certificate of Analysis is real?

Ask two separate questions. Is the document what it claims to be, and is it about the vial you are being sold? For the first, contact the laboratory named on the certificate and ask it to confirm the report, using contact details you find on the laboratory's own site rather than the ones printed on the document. For the second, check that the batch reference on the certificate matches the batch reference on the vial, character for character.

What should a Certificate of Analysis include?

The compound named in full, a unique batch or lot reference, the vial size or fill weight, an identity result with the method that produced it, a purity result with the method named, the test date, the laboratory's identity and contact details, and the chromatogram rather than the summary figures alone.

Is a purity figure published across a whole product range a problem?

It is a marketing decision rather than a measurement. Purity is determined per batch by one method on one date, so a single figure applied to an entire catalogue cannot have come from testing every batch in it.

Does this tool verify a supplier or a product?

No. It scores a document against the fields a certificate should carry and tells you what is missing. It makes no assessment of any material and gives no usage or handling guidance. The only check that confirms a certificate is contacting the issuing laboratory yourself.

Scoring weights the 18 checks by how much the certificate depends on each, out of 41 points in total.