Scientifically reviewed by Dr Stephan Hansberg
Independent peptide testing explained: labs and fake COAs
How third-party peptide testing works, the difference between vendor-submitted and independently sourced samples, what ISO/IEC 17025 accreditation means, and how to check that a COA is real.
Key takeaways
- •"Third-party tested" means a lab other than the manufacturer ran the test. It does not say who chose the sample or whether it represents what is shipped.
- •Programmes such as Finnrick test samples from several sources and mark vendor-submitted samples separately; labs such as Janoshik test what clients send them.
- •ISO/IEC 17025 accreditation shows a lab is competent for a defined scope of tests. Check the accreditation body's register and that the specific test is in scope.
- •Verifying a COA means matching the batch, confirming the report with the issuing lab, and checking the document for edits.
- •Celyfe's certificates name the lab (Analiza Białek, Wrocław), batch and date, and are downloadable from /coa.
The short answer
Independent peptide testing means a laboratory with no stake in the sale analyses a sample and reports the result. Its value depends on three things: who chose the sample, whether the lab is competent for the test, and whether the report you are reading is the one the lab actually issued. You can check all three with a batch match, a lab lookup and a verification request.
Types of testing you will see
Finnrick's guidance makes a useful point: even third-party testing that a vendor initiates is not fully independent, because the vendor controls which sample is sent. Batch-specific results from a named lab are still far more useful than no testing, but a reader should know which kind of testing they are looking at.
| Type | Who chooses the sample | Main strength | Main limit |
|---|---|---|---|
| In-house manufacturer testing | Manufacturer | Tests every batch at source | Not independent; lab often unnamed |
| Vendor-commissioned third-party test | Vendor | Independent lab, named, batch-specific | Vendor chooses which sample is sent |
| Public or community testing programme | Buyers or the programme | Samples bought on the open market | Coverage depends on what people submit |
| Accredited contract lab (ISO/IEC 17025) | Whoever commissions it | Audited competence for the tests in scope | Accreditation covers listed methods only |
Finnrick, Janoshik and accredited labs
Finnrick runs a public testing programme. It sends individual product samples, typically vials of lyophilised peptide, to commercial labs for purity and quantity testing, and publishes vendor ratings from those results. It says vendors' own certificates do not count towards its ratings, that it does not accept payment to change rankings, and that samples a vendor submits itself are marked as vendor-submitted.
Janoshik is a commercial analytical laboratory widely used in the research peptide market to test samples sent by vendors and buyers. Finnrick's COA guide lists Janoshik among the services that let readers verify a report against the lab's own records.
Accredited laboratories have been assessed against ISO/IEC 17025:2017, the international standard for the competence of testing and calibration laboratories. Accreditation is granted by a national body, such as UKAS in the UK, PCA (Polskie Centrum Akredytacji) in Poland, A2LA or ANAB in the US and NATA in Australia, and it covers a defined scope of tests listed in a schedule. Mutual recognition between accreditation bodies means reports from accredited labs are accepted across borders. A lab can be accredited for some methods and not others, so check that the test on your certificate appears in the lab's scope.
How to verify a COA is real
Work through these checks in order. Most fake or misused certificates fail the first two.
- Batch match: the batch or lot number on the certificate must match the one printed on the product you received.
- Lab lookup: find the laboratory independently (not through a link in the PDF), confirm it exists at the stated address and runs the stated method.
- Report verification: use the lab's online verification page or QR code if it offers one, and confirm the URL belongs to the lab's own domain. Otherwise email the lab with the report number and ask it to confirm the result.
- Accreditation check: if the document shows an accreditation mark, look up the certificate number on the accreditation body's register and confirm the test is in scope.
- Date and sequence: the report date should be after the batch was made and recent enough to be relevant.
- Product match: compound, label claim and container type should match what is being sold.
What independent testing cannot tell you
Even a genuine, independent, accredited result has limits. It describes the sample that was tested, on the day it was tested, by the methods listed. It does not describe other batches, and it does not describe what happens to the material after testing, for example during storage or shipping. That is why batch numbers and test dates matter so much, and why storage conditions are part of quality, not separate from it.
A certificate is also only as complete as the tests it contains. A genuine HPLC purity report is genuine evidence of purity; it is not evidence about identity by mass, quantity, endotoxin or sterility unless those tests are listed. Reading a certificate well means giving each result exactly the weight it deserves, no more and no less.
Red flags of an edited COA
- Batch number, date or vendor name in a different font, size or alignment to the rest of the page
- Text that cannot be selected in a document that should be digitally generated, or selectable text sitting over an image
- The same report number appearing on certificates for different compounds or batches
- A QR code that leads to a domain other than the lab's own, or to a generic page rather than the specific report
- Results that are suspiciously round, identical across batches, or more precise than the method can support
- A lab name with no findable website, address or phone number
- A chromatogram that is missing, low-resolution, or does not match the numbers in the results table
Where Celyfe fits
Celyfe's published certificates come from Analiza Białek, an independent laboratory in Wrocław, Poland: NAD+ Precision Pen batch A26085 and WOLVERINE (BPC-157 15mg + TB-500 15mg) batch C26071, each 99% purity by HPLC, reports dated 2 October 2026. Each names the lab, batch and date, so it can be checked in the way described above. GLOW and KLOW certificates are being re-issued and are listed in the COA library at /coa when published.
Sources
Sources used for this guide, checked October 2026:
- Finnrick: How to read a certificate of analysis (COA), 1 March 2026 (finnrick.com/blog)
- Finnrick: Testing methodology and vendor ratings (finnrick.com/methodology)
- ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories
- UKAS: ISO/IEC 17025 accreditation and the schedule of accreditation (ukas.com)
- Polskie Centrum Akredytacji: role as Poland's national accreditation body under the Act of 13 April 2016 (pca.gov.pl)
Research use only
Celyfe supplies research peptides for laboratory and research use only. Nothing on this page is guidance on use in humans or animals.
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