CURATED VENDOR PROFILE

Pure Peptides

6.37 PB score / 10 Band D

Included because it is one of the more repeatedly cited U.S. research-vendor names in current transparency-focused community lists and clearly belongs in the same comparison set as Peptide Partners, Kimera Chems, and Elite Research USA.

Curated
Visit official website Coupon & discount Compare prices 77 public COAs

Same formula for every vendor: verifiable testing evidence forms the backbone; third-party reviews adjust it within a bounded range. How scoring works →

Score breakdown

Rank Composition — the terms below are the published receipt for this score. Full formula on the methodology page.

Verified-evidence backbone
6.20
Third-party reviews (bounded)
+0.02
Curated review bonus
+0.15
AT A GLANCE

Nearly every product carries a public MZ Biolabs certificate set — HPLC-UV purity (averaging ~99.7%), mass-spec identity, and an endotoxin report — a genuinely deep named-lab document layer, though MZ offers no public per-COA lookup, so the certificates are inspectable rather than independently verifiable at the lab.

Best for

Readers who want a named lab partner plus a meaningful public document layer without needing a giant archive hub.

Watch-out

The public evidence is real, but it still looks more like a vendor-hosted image/document layer than a provider-controlled verification path.

TESTING TRANSPARENCY
Publicly inspectable

Public sitemap-derived COA / MS / endotoxin image layer

Pure Peptides names MZ Biolabs as its third-party testing lab and publishes a per-product certificate set — HPLC-UV purity (~99.7% average), mass-spec identity, and endotoxin — as public image assets across most of the catalog. That is a strong named-lab document layer, but MZ Biolabs exposes no public per-COA verification lookup, so these read as inspectable vendor-hosted certificates from a named lab rather than provider-run verification that a reader can confirm at the lab’s own site.

Testing providers
MZ Biolabs Vendor names this provider · verified public link Open evidence
10 public certificate examples

Representative product pages showing how this catalog exposes report or verification paths. Examples, not proof for every current lot.

COA Image KLOW 80MG · KLOW 80MG — MZ Biolabs Certificate of Analysis COA Image GLP RT10MG · GLP RT10MG — MZ Biolabs Certificate of Analysis COA Image SS 31 50MG · SS 31 50MG — MZ Biolabs Certificate of Analysis COA Image IPAMORELIN 5MG · IPAMORELIN 5MG — MZ Biolabs Certificate of Analysis COA Image GLP RT 20MG · GLP RT 20MG — MZ Biolabs Certificate of Analysis COA Image PT 141 10MG · PT 141 10MG — MZ Biolabs Certificate of Analysis COA Image BUY THYMOSIN ALPHA 1 20MG · BUY THYMOSIN ALPHA 1 20MG — MZ Biolabs Certificate of Analysis COA Image THYMOSIN ALPHA 1 · THYMOSIN ALPHA 1 — MZ Biolabs Certificate of Analysis COA Image BUY MOTS C 10MG · BUY MOTS C 10MG — MZ Biolabs Certificate of Analysis COA Image THYMOSIN BETA 4 · THYMOSIN BETA 4 — MZ Biolabs Certificate of Analysis
CERTIFICATE EVIDENCE
77
certificates in the public archive
Named-lab documents published by the storefront. Independent verification of the report and vendor client has not been established.
Jul 2026
most recent test on file
27 testing dates across 45 certificates; 32 state no date

Holding a certificate for this vendor that is not here? Send it to the archive →

BUSINESS IDENTITY
Domain registered
Mar 2023 · 3 years
Legal entity
Not published
Business address
Not published
Phone
Not published

Observed from public domain records and the vendor's own site on Aug 27, 2026. Identity facts are shown for context and do not affect scores.

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