PepMarket Review: Pricing, COAs, Testing, and What We Found
An independent PepMarket review covering openly priced research vials, GLP-1 SM / GLP-2 TZ / GLP-3 RT house labels, U.S. domestic shipping claims, and Freedom Diagnostics certificates on the public /coa page.
PepMarket is now a curated vendor on PeptideBenchmark. That decision rests on what a reader can check without guessing — public prices, milligram strengths, house-label mappings, and Freedom Diagnostics certificates on a public COA page — while being honest about a young domain and incomplete certificate coverage.
Reviewed August 9, 2026. Updated August 18, 2026: PeptideBenchmark now has a disclosed affiliate relationship with PepMarket. Shoppers can use the referral link https://www.pepmarket.net/r/PEPTIDEBENCHMARK and checkout code PEPTIDEBENCHMARK for 15% off. PeptideBenchmark may earn a commission when that link or code is used. The original review findings on pricing, Freedom Diagnostics certificates, and domain age are unchanged. The vendor sells research-use-only products; this is a commercial-transparency and documentary-evidence review, not human-use guidance or medical advice.
The short version
We found a research storefront with:
- openly priced single-vial strengths on the public catalog;
- house labels GLP-1 SM, GLP-2 TZ, and GLP-3 RT for semaglutide, tirzepatide, and retatrutide;
- U.S. domestic shipping language and Mon–Fri Eastern support hours under PepMarket LLC (no city/street address published);
- Freedom Diagnostics certificate images on the public /coa page that resolve under the PepMarket LLC client name where laboratory lookup succeeds;
- a young domain (registered May 2026) and certificate coverage for only a subset of the catalog.
The catalog is usable for $/mg comparison without an account. Certificates are centralized on /coa rather than scattered only across product galleries. PeptideBenchmark confirms Freedom Diagnostics search codes independently; a matched report documents the tested sample and does not endorse every vial. Marketing purity language is not the same thing as a published certificate for every SKU.
What we found in the catalog
PepMarket lists live prices and milligram strengths on its public catalog. PeptideBenchmark compares those single-vial offers per mg on Pricing and Stack Builder.
| Catalog result | Count | PB treatment |
|---|---|---|
| Public product variants audited | 29 | Kept in the catalog check |
| Comparable in-stock vial rows | 27 | Published to Pricing and Stack Builder |
| Out of stock | 1 | GLP-3 RT 20 mg |
| Deferred | 0 | — |
| Out of scope | 1 | Reconstitution solution |
House labels matter here:
- GLP-1 SM → semaglutide
- GLP-2 TZ → tirzepatide
- GLP-3 RT → retatrutide
Blend totals on the labeled vials include GLOW 70 mg, KLOW 80 mg, Wolverine 10 mg, and CJC/Ipamorelin 5/5 mg.
Current offers can be compared on PeptideBenchmark Pricing, and mixed-product requirements can be modeled in the Stack Builder.
Testing transparency
Browse preserved records in the PepMarket COA results.
The public /coa page publishes Freedom Diagnostics certificate images for nine products (including BPC-157, GHK-Cu, the three GLP house labels, Melanotan II, MOTS-c, TB-500, and Tesamorelin). Search codes use the PepM* prefix; PeptideBenchmark confirms each code against the laboratory register under PepMarket LLC where the lookup succeeds.
A matched Freedom report documents purity, identity, and net content for the tested sample. It is not a sterility or endotoxin guarantee, and it does not cover catalog products that still lack a published certificate image.
Location and fulfillment claims
Public contact language states:
- Legal entity: PepMarket LLC
- Support hours: Mon–Fri · 9 AM – 4 PM ET
- Shipping: discreet U.S. domestic, 2–4 business days
No city or street-level address was published for PeptideBenchmark to verify. The storefront domain was created in May 2026 — treat longevity claims and brand marketing separately from the laboratory documents you can check.
What this review does not claim
- No binary “safe / unsafe” or “legitimate / illegitimate” verdict
- No endorsement of human use
- No claim that every SKU has a currently resolvable Freedom report
- No claim that a matched COA proves the vial you receive matches the tested lot
Related PeptideBenchmark pages
- PepMarket vendor profile
- PepMarket COA database filter
- Pricing board
- Stack Builder
- How vendor scoring works
- Official PepMarket site
Common questions
Is PepMarket legitimate?
PeptideBenchmark does not issue binary legitimacy or product-safety endorsements. We confirmed an openly priced research catalog under PepMarket LLC, U.S. domestic shipping language, and Freedom Diagnostics certificate images on the public /coa page that resolve under the PepMarket LLC client name where the laboratory lookup succeeds. Those facts create an inspectable commercial and documentary record; they do not establish the condition or safety of a physical vial. The storefront domain was registered in May 2026 and is younger than many peers.
Does PepMarket publish COAs?
Yes, for a subset of the catalog. The public /coa page publishes Freedom Diagnostics certificate images. PeptideBenchmark confirms PepM* search codes against the laboratory register under PepMarket LLC where they resolve. Products without a published certificate image are not counted as tested in our evidence set.
What do GLP-1 SM, GLP-2 TZ, and GLP-3 RT mean?
They are PepMarket storefront labels. PeptideBenchmark maps GLP-1 SM to semaglutide, GLP-2 TZ to tirzepatide, and GLP-3 RT to retatrutide for cross-vendor comparison.
Where is PepMarket based?
Public contact language references U.S. domestic shipping and Eastern Time support hours under PepMarket LLC, without publishing a city or street-level address PeptideBenchmark could verify.
Does PeptideBenchmark have an affiliate relationship with PepMarket?
Yes. As of August 18, 2026, PeptideBenchmark has a disclosed affiliate relationship with PepMarket. Shoppers can use the referral link https://www.pepmarket.net/r/PEPTIDEBENCHMARK and checkout code PEPTIDEBENCHMARK for 15% off. That relationship does not change PepMarket’s benchmark score, trust findings, or curated status.