The Peptide Directory

Peptidology

peptidology.co · Research-chemical vendor · Research peptides

Peptidology logo
Logo from peptidology.co, captured October 19, 2026. Shown for identification only.

Online seller of research peptides, a testing page naming Vanguard Laboratory.

As of October 19, 2026, Peptidology publishes a public certificate-of-analysis (COA) or test-results page and names 1 outside testing lab (Vanguard Laboratory), and mentions endotoxin, sterility and heavy-metal testing. We found no FDA warning letter naming it. We have not tested its products. FDA record.

COA / test page
Published
Labs named
Vanguard Laboratory
FDA warning letter
None found
Listed $/mg
Not verified
Catalog matched
Not matched

Updated . Facts checked on Peptidology's own pages and fda.gov.

Quality & trust signals

What Peptidology's own pages say, with the page and the date we read it. Vendor claims are labeled as such; we have not independently tested products.

Research-use-only notice
Yes — the site says: “For research use only”
Peptidology — site copyChecked
Testing / COA page
Yes — linked from the site navigation.
Peptidology — testing pageChecked
Labs named by the vendor
Vanguard Laboratory.
Peptidology — site pageChecked
HPLC mentioned
Vendor copy: “Reconstitution check, and HPLC assay against the label claim Live figures, computed from the certificate”
Peptidology — site copyChecked
Endotoxin testing mentioned
Vendor copy: “on receipt: identity, purity, net peptide content, endotoxin”
Peptidology — site copyChecked
Sterility testing mentioned
Vendor copy: “to the 43% order cap · get verified 250 / 250 lots pass sterility 467 third-party lab reports published 3 for the price of 2 on compound vials”
Peptidology — site copyChecked
Heavy-metals testing mentioned
Vendor copy: “7 Feb 2025 Lab report on every batch 8 Apr 2025 Heavy metals added 9 Oct 2025 Second germ test, lab 2 14 Feb 2026 The full panel +4 tests”
Peptidology — site copyChecked
Regulatory status: FDA warning letter
None found naming Peptidology in FDA's warning-letter records.
FDA — warning lettersChecked

Peptidology prices per mg

We could not verify Peptidology's prices for BPC-157, TB-500, semaglutide, tirzepatide or retatrutide from a public product page, so none are shown.

Compounds in Peptidology's catalog (0)

We could not read Peptidology's catalog from public product data, so we don't list products here. Check the vendor's site and match any certificate to the lot you receive.

Peptidology FAQ

Does Peptidology publish certificates of analysis (COAs)?

Yes. Peptidology's site links a testing or COA page and names Vanguard Laboratory. Match any certificate to the lot number on the vial you receive.

Has the FDA sent Peptidology a warning letter?

We found no FDA warning letter naming Peptidology in fda.gov's warning-letter search on October 19, 2026.

How much does Peptidology charge per mg?

We could not verify per-mg prices for Peptidology for the five compounds we track.

Is Peptidology legit?

We don't rate vendors. What we can verify: it links a testing page, it names 1 testing lab, and no FDA warning letter found. Its products are sold for research use only.