A liquid chromatography stack connected to a quadrupole mass spectrometer on a laboratory bench.
Laboratory research section — separate from medical care

Supplier documentation catalogue

The same questions asked of every supplier. Are certificates tied to a specific lot? Is the testing laboratory named and contactable? Which analytical methods are actually shown? Is there a real business address? Is any regulatory action on record?

These are observations, not ratings. Suppliers are listed alphabetically and are not ranked against each other. We do not purchase or test product, so nothing here speaks to purity, sterility or safety, and nothing here is a recommendation to buy. There are no affiliate links in this section and no followed outbound links to any supplier.

Research-use products

Products labelled for research use are not approved for personal, medical or veterinary use. In every FDA warning letter in our archive, a "research use only" statement did not change how the agency treated products the site marketed for human effects.

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What we found across every supplier

Not one of the twelve suppliers publishes a sterility report for any catalogue item. Exactly one publishes an endotoxin result.
Nine of twelve name the laboratory that tested the product. Three do not name one at all, and one of those issues certificates on its own letterhead.
Only one certificate in the whole catalogue cites an accreditation number a reader could check with the accrediting body.
Two suppliers sell GLP-1-class products under codes rather than drug names — the naming pattern FDA has cited in warning letters to other firms.
Seven of twelve publish no street address at all — a city, a state, or nothing. Two more publish one whose suite is a mailbox-style designation.
Where a certificate page shows "the latest report per product" rather than a lookup by lot, it cannot tell you about the unit you would receive.
Suppliers recorded 12 same questions asked of each
Publish a certificate 11/12 a document we could open and read
Publish a sterility report 0 not one, in the whole catalogue
Affiliate links 0 no followed outbound link to any supplier

The catalogue

12 suppliers · listed alphabetically · observed 2026-08-04

American Peptides

americanpeptides.us

Publishes lot-referenced certificates from a named laboratory, with the lot numbers repeated on the product pages. The documents are shown in full and include both an HPLC chromatogram and a mass spectrum, so identity as well as purity is addressed. One certificate carries an endotoxin result under USP<85> — the only endotoxin figure found anywhere in this catalogue — but no sterility report was found despite a site-wide "Sterility Verified" banner. A city is published but no street address, suite or registered legal entity, and no laboratory accreditation number is cited.

Testing laboratory Bioviridian, College Station TX — named principal chemist, certificate lookup resolves; no accreditation number cited
Methods shown RP-HPLC at 214 nm with chromatogram, MALDI-MS identity with spectrum, heavy metals by USP<232>, endotoxin by USP<85>
US business address City only — "Shreveport, LA". No street address or suite published.

Behemoth Labz

behemothlabz.com

Publishes a large archive of lot-referenced certificates from a named laboratory, with an HPLC chromatogram and peak list on the document and the method stated as HPLC-UV-MS. No sterility or endotoxin report was found and no accreditation number is cited. The laboratory address printed on the certificate differs from the address on that laboratory’s own website, and on the certificate examined the date in the file name does not match the analysis date printed on the document. No street address, legal entity or age requirement is published.

Testing laboratory MZ Biolabs, Tucson AZ — named analytical chemist; certificate address differs from the laboratory’s published address; no accreditation number cited
Methods shown Stated as HPLC-UV-MS, with a chromatogram and peak list reproduced; no separate mass spectrum on the certificate examined
US business address Not published — email and a toll-free number only; the contact page returned HTTP 404

BioInfinity

bioinfinity.co

Publishes a 44-entry certificate index with batch numbers that also appear on the product pages, attributed to a named laboratory in Basel, Switzerland. The certificates are hosted on that laboratory’s external domain rather than on the supplier’s own site, and the individual certificate URL did not resolve to a document when fetched, so their contents — including whether any chromatogram or spectrum is shown — could not be verified. It is the only supplier in this catalogue publishing a registered legal entity. GLP-1-class products are addressed by codes, with the product page displaying the code rather than the drug name.

Testing laboratory Verum Analytics, Basel, Switzerland — not a US laboratory; no accreditation number published
Methods shown Cited as HPLC-UV/MS with purity figures only; no chromatogram or spectrum found on any page fetched
US business address BioInfinity LLC, 1460 Broadway, Manhattan, NY 10036 — no suite, floor or unit number published

Biotech Peptides

biotechpeptides.com

Publishes a two-page certificate per product size with a lot number, analysis date and signature date, issued by a named laboratory. Method is printed as HPLC-UV-MS with a chromatogram. A US address and phone are published. Returns are expressly not accepted, and there is no regulatory-disclosure section.

Testing laboratory MZ Biolabs, Tucson AZ — named analyst on the certificate
Methods shown HPLC-UV-MS with chromatogram and peak list
US business address 8275 S Eastern Ave, Suite 200, Las Vegas, NV 89123

Blue Sky Peptide

blueskypeptide.com

Publishes purity percentages and a "3rd Party Tested" badge on product pages but no certificate of analysis, no lot or batch number and no testing laboratory name; the certificate URL returns HTTP 404 and no chromatogram or spectrum was found anywhere on the site. Its own terms state that the products have not been sterilized or tested by the company for safety and efficacy in any use. A 30-day return policy and a stated minimum age of 21 are published, but no street address and no legal entity.

Testing laboratory Not named — no laboratory, contact details or accreditation number published on any page fetched
Methods shown Product pages state "Mass Spectrometry and UV" with a purity figure only; no chromatogram or spectrum published
US business address Not published on the homepage, About page, footer, shipping policy or terms

Core Peptides

corepeptides.com

The only supplier in this set whose certificate carries an ISO 17025 accreditation mark and a citable accreditation number. Certificates are lot-specific and signed by a named laboratory director. The gap is method coverage: HPLC purity is shown without a mass-spectrometry identity report, so the document establishes purity but not identity.

Testing laboratory Vanguard Laboratory, Olympia WA — ISO 17025:2017, A2LA certificate #6377.01.01 cited
Methods shown HPLC-UV/VIS with chromatogram. No LC-MS identity report observed.
US business address 5401 S Kirkman Rd, Suite 310, Orlando, FL 32819 (shared/executive suite)

Limitless Life Nootropics

limitlesslifenootropics.com

The site states that certificates are provided for every research peptide and that HPLC and LC-MS testing is performed by certified laboratories, but we could not locate a publicly viewable, lot-specific certificate, and no laboratory is named anywhere. Part of the catalogue sits behind an account application, which may limit what is publicly visible — that limitation is recorded rather than scored around.

Testing laboratory None named — quality statement refers to "three different independent labs" without naming any
Methods shown Claims HPLC and LC-MS on every batch; no viewable certificate found against which to check
US business address Partial — "Pensacola, FL USA" with phone and email; no street address found

Loti Labs

lotilabs.com

Publishes lot-referenced certificates from a named laboratory showing both an HPLC chromatogram and a mass spectrum, with identity stated as established by LC-MS. The lot number appears on the certificate but not on the product page. No sterility or endotoxin report was found and no accreditation number is cited. A full street address with a unit number and a 30-day unopened-product refund policy are published; no registered legal entity is named, and the site states two different minimum ages in two places.

Testing laboratory S.R. Bio Labs, Orlando FL — named analyst and certificate lookup; no accreditation number cited
Methods shown UV 214–290 nm, HPLC for purity and LC-MS for identity, with both a chromatogram and a mass spectrum reproduced
US business address 1204 S Broad St #336, Brooksville, FL 34601 — whether "#336" is a suite, unit or mailbox could not be verified

Nootropic Source

nootropicsource.com

Publishes certificates for a subset of its catalogue as images on its own letterhead. The one examined identifies the sample by catalogue number rather than by lot, so it cannot be matched to a shipped batch; it names no testing laboratory, carries no signature or accreditation number, and is dated 2016. It reports an HPLC purity figure and records mass spectrometry only as the word "Consistent", with no chromatogram or spectrum reproduced. No sterility or endotoxin report, street address or legal entity was found, and the stated policy is that all sales are final.

Testing laboratory Not named — certificates are issued on the supplier’s own letterhead with no signature or accreditation number
Methods shown HPLC purity figure; mass spectrometry recorded only as "Consistent", with no chromatogram or spectrum reproduced
US business address Not published on the contact, shipping, returns or legal-disclaimer pages

NuScience Peptides

nusciencepeptides.com

Publishes lot-referenced certificates from a named laboratory, and the documents include both a chromatogram and a mass spectrum. The laboratory’s own site returned HTTP 403, so its address and any accreditation could not be verified, and no accreditation number appears on the certificate. Three GLP-1-class products are sold under codes rather than drug names, and the certificate’s identity field reports a code rather than the compound. Lot numbers appear on the certificates but not on the product listings; no sterility or endotoxin report, street address or legal entity was found.

Testing laboratory Freedom Diagnostics — named principal chemist, but no address, phone or accreditation number on the certificate; the laboratory’s site returned HTTP 403
Methods shown HPLC with UV detection coupled to mass spectrometry, with a chromatogram and a mass spectrum reproduced; no expected mass printed for comparison
US business address City only — "Albuquerque, NM", plus a phone number. No street address or suite published.

Sports Technology Labs

sportstechnologylabs.com

Publishes a public certificate page with a named laboratory, a named analyst and full laboratory contact details, and explicitly criticises suppliers that redact testing-company contact information. The certificate examined is lot-specific. The limitation is that the page shows the latest certificate per product rather than a lookup for the lot actually shipped.

Testing laboratory MZ Biolabs, Tucson AZ — named analyst and laboratory contact email published
Methods shown HPLC-UV-MS with chromatogram and peak list
US business address 494 Bridgeport Avenue, Suite 101-222, Shelton, CT 06484 (mailbox-style suite)
FDA warning letter dated 2024-12-10 is on record for this entity. The official document is linked in the entry.

Swiss Chems

swisschems.is

Documentation is strong and unusually verifiable — 44 dated reports, batch-specific, each carrying a key the reader can check against the issuing laboratory. Two things pull the score down and neither concerns product quality: a US street address could not be verified from the site, and an FDA warning letter dated 2024-12-10 is on record for this entity and domain with no disclosure of it anywhere on the site.

Testing laboratory Janoshik Analytical — reports carry a customer-verifiable unique key
Methods shown Quality page states HPLC, LC-MS, NMR or equivalent; the report examined prints the result but not the method name
US business address Could not verify — About page states only "Based in USA"; contact page returned HTTP 403
How to read a peptide COA
Lot matching, HPLC area percent, LC-MS identity, and the inferences a certificate cannot support.
FDA warning-letter archive
Every letter, with the products FDA names and a link to the official document.