- Lab named
- On the vendor's own pages
- Per lot
- Report tied to a batch or lot
- Lookup
- Lab-side copy you can open
- Outside
- Janoshik, Finnrick, others
- Not scored
- Price, shipping, reviews
- Checked
- Nov 6, 2026
Third Party Tested Peptides: Vendors Compared by Published Testing
Every vendor says its peptides are third-party tested. This page sets aside price and shipping and asks one thing: what testing does each vendor actually publish, and can you check it?
Compiled by Jude Henderson, Editor · Sources opened Nov 6, 2026 · How we check reports
AFFILIATE Some links on this page are affiliate links. We may earn a commission if you buy through them. Read the disclosure
Results at a glance
PASS means the page we read showed it. PARTIAL means part of it. NOT SHOWN means we could not find it on the vendor's pages. N/A means not stated or not checked.
| Vendor | Lab named | Per-lot COA | Lab lookup | Finnrick (Nov 6, 2026) |
|---|---|---|---|---|
| PSPeptidesOUR PICK | PARTIAL | PASS | PASS | No vendor profile found |
| Peptide Partners | PASS | PASS | PARTIAL | 66% |
| Swiss Chems | PARTIAL | PASS | PASS | 48% |
| Core Peptides | PASS | PASS | N/A | 76% |
| American Peptides | PARTIAL | PASS | PARTIAL | 78% |
| Palmetto Peptides | NOT SHOWN | PASS | N/A | No vendor profile found |
| Ascension Peptides | NOT SHOWN | PARTIAL | N/A | Profile exists with 0 tests: not enough to rate |
| Limitless Life Nootropics | NOT SHOWN | PARTIAL | N/A | 54% |
| Pure Health Peptides | NOT SHOWN | PARTIAL | N/A | No vendor profile found |
| Biotech Peptides | N/A | N/A | N/A | Profile exists with 0 tests: not enough to rate |
Vendor by vendor
PSPeptides is our pick and is listed first. The others follow in order of how much of their testing a reader can check. This is not a quality ranking of the products.
PSPeptidesOUR PICK- Lab
- PARTIAL North American Diagnostics (named in the PDFs, not in the page text); ILS Laboratories for bacteriostatic water
- Per lot
- PASS Yes. Each report carries a test ID and a batch ID, e.g. NAD-0037963 / PSP-09112026BP
- Lookup
- PASS Yes. The test ID returns the same BPC-157 report on nadiagnostics.com/verify; the ILS report has an access code
- Outside
- No Janoshik or Finnrick results found on its certifications page
- Finnrick
- No vendor profile found
Separate reports for HPLC purity and identity, endotoxin, sterility, heavy metals and a fentanyl screen. Some product entries have only older reports or no COA link, and the lab's website does not state an accreditation.
What checks out
- Test ID NAD-0037963 returned the same BPC-157 report on the lab portal: purity 99.97%, content 4.88mg, batch PSP-09112026BP.
- Separate endotoxin, sterility, heavy metals and fentanyl reports for the same test ID.
- Bacteriostatic water lot PSP-09232025BA tested by ILS Laboratories, which states ISO/IEC 17025 accreditation on the report.
What falls short
- The certifications page text does not name the lab; you have to open a PDF.
- nadiagnostics.com does not state an accreditation.
- No Janoshik or Finnrick results found.
- Some products show only older reports or none.
- Reports name the client as "ProSupply Peptides", not PSPeptides.
Peptide Partners#02- Lab
- PASS Several, named per record: TrustPointe, Kovera, Chromate, BioRegen, Ethos
- Per lot
- PASS Yes. Records list batch ID, manufacturer ID, date and lab
- Lookup
- PARTIAL States every certificate can be validated on the lab's website
- Outside
- None found
The largest Finnrick record of the vendors here, which makes its rating the most meaningful one.
Swiss Chems#03- Lab
- PARTIAL Not named in the page text; report links point to Janoshik and Freedom Diagnostics
- Per lot
- PASS Yes. Reports listed by batch code, e.g. 2610-CY-BP, 2608-ED-BP
- Lookup
- PASS Yes, through the linked Janoshik verify pages and Freedom Diagnostics COA files
- Outside
- Janoshik and Freedom Diagnostics report links in the page code
Its results page says products are tested by "independent, ISO-accredited laboratories" without naming them.
Core Peptides#04- Lab
- PASS Vanguard Laboratory
- Per lot
- PASS Yes. BPC-157 lots C74112 (5 mg) and C74113 (10 mg), tested 7/22/2026
- Lookup
- N/A Not stated on the product page
- Outside
- None found on the product page
Method listed as HPLC-UV/VIS for identity and purity, with a result of >99.80% for both lots.
American Peptides#05- Lab
- PARTIAL Bioviridian (homepage); not named on the COA index
- Per lot
- PASS Yes. Lot-matched COAs listed for 51 products
- Lookup
- PARTIAL Has a "Verify Your COA" link in its menu; not tested by us
- Outside
- None found
Finnrick's profile lists two websites for this vendor. A rating built on one test says little.
Palmetto Peptides#06- Lab
- NOT SHOWN Not named; "independent third-party lab testing"
- Per lot
- PASS Yes. COAs listed by lot with test date, e.g. ARC-BP10-004, Jun 11, 2026
- Lookup
- N/A Not stated
- Outside
- None found
- Finnrick
- No vendor profile found
Good lot listing, but without a lab name there is nothing to check the report against.
Ascension Peptides#07- Lab
- NOT SHOWN Not named on the COA page
- Per lot
- PARTIAL Searchable by batch or lot: "122 COA Records"
- Lookup
- N/A Not stated
- Outside
- None found
The COA library is searchable, but the page text does not say which lab produced the reports.
- Lab
- NOT SHOWN Not named; "independent third-party laboratory"
- Per lot
- PARTIAL FAQ says each batch is verified; no lot list seen
- Lookup
- N/A Not stated
- Outside
- None found
The FAQ lists HPLC for purity and mass spectrometry for identity.
Pure Health Peptides#09- Lab
- NOT SHOWN Not named; "U.S.-based third-party testing"
- Per lot
- PARTIAL FAQ says every batch is tested and documented in a COA
- Lookup
- N/A Not stated
- Outside
- None found
- Finnrick
- No vendor profile found
The FAQ names HPLC and mass spectrometry as the methods.
Biotech Peptides#10- Lab
- N/A Not checked: the site refused our request
- Per lot
- N/A Not checked
- Lookup
- N/A Not checked
- Outside
- Not checked
Its website returned an access error on Nov 6, 2026, so nothing on its pages could be confirmed.
Our pick · affiliate link
Open the PSPeptides certifications page and match a test ID against the lab's verify portal yourself.
How we checked
On Nov 6, 2026 we opened each vendor's testing or product page and recorded what it said about the lab, lots and verification. Where a vendor linked a lab lookup, we noted it. For PSPeptides we entered a test ID on the lab's portal ourselves. Finnrick figures come from each vendor's Finnrick profile on the same day. We did not buy or test any product.
Want to know what each field on a report means? Read how to read a peptide COA.
What does third party tested mean for peptides?
It means a lab outside the vendor analysed a sample. On its own the phrase proves little. Look for the lab's name, a report tied to a lot number, and a way to check the report on the lab's own site.
Which vendor publishes the most checkable testing?
On Nov 6, 2026, PSPeptides, Peptide Partners and Swiss Chems all named labs per report and offered a lookup outside their own site. Peptide Partners and Swiss Chems also had Finnrick records; PSPeptides did not.
Why is PSPeptides your pick if it has no Finnrick record?
Its reports are the most complete set we read: separate HPLC, identity, endotoxin, sterility, heavy metals and fentanyl reports per batch, each with a test ID that returned the same report on the lab's portal. The missing outside rating is listed as a weakness.
Is a vendor without a named lab untested?
Not necessarily. It means you cannot check the claim. We record it as not shown rather than as a failure of the product.
Source log
Every page below was opened on Nov 6, 2026.
- PSPeptides certifications pagepspeptides.com/certifications/
- North American Diagnostics verify lookup, NAD-0037963nadiagnostics.com/verify/?batch=NAD-0037963
- PSPeptides bacteriostatic water COA (ILS Laboratories)pspeptides.com/wp-content/uploads/2026/10/pspeptidescom-PSP-09232025BA-Xb4qJZ.pd
- North American Diagnostics homepagenadiagnostics.com/
- Peptide Partners independent certificationspeptide.partners/independent-certifications/
- Swiss Chems product page lab reportsswisschems.is/product/bpc157-with-arginine-salt/
- Swiss Chems independent test resultsswisschems.is/independent-test-results/
- Core Peptides BPC-157 page, COA tablewww.corepeptides.com/peptides/bpc-157/
- American Peptides COA indexamericanpeptides.us/pages/coa
- American Peptides homepageamericanpeptides.us/
- Palmetto Peptides COA pagepalmettopeptides.com/coa
- Ascension Peptides COA pageascensionpeptides.com/certificates-of-analysis/
- Limitless Life Nootropics FAQlimitlesslifenootropics.com/faqs/
- Pure Health Peptides FAQwww.purehealthpeptides.co/faqs
- Biotech Peptides homepage (access refused)www.biotechpeptides.com/
- Finnrick vendor databasewww.finnrick.com/vendors