Evidence before endorsement
Independent research, supplier documentation and pricing intelligence. Built for due diligence.
SIGNAL ≠ THE WHOLE STORY
01
Identity
02
Purity
03
Traceability
Understand the evidence, the testing methods, and the questions that remain.
Explore the researchCompare documentation, tracked prices, and supplier transparency in one place.
Compare suppliersReview COA documents and work through laboratory concentration calculations.
Open the toolsThe research brief
Reading COAs
Learn what identity, purity, lot numbers and testing dates actually tell you.
Read the guideTesting basics
See what each test checks—and why one result rarely tells the whole story.
Read the guideSupplier standards
Simple warning signs to check before trusting a supplier's claims.
Read the guideFounding pre-screen
Checked September 1, 2026
Public-documentation pre-screen
Documented evidence
Public batch identifiers with direct Janoshik and ILS report access; quantity and endotoxin coverage appears on multiple records.
Unresolved questions
Sample-selection controls and current sterility coverage remain unresolved.
Review status
Public records reviewed
Example price
$24.99 / 5 mg · $44.99 / 10 mg
Affiliate status
No public program located
Public-documentation pre-screen
Documented evidence
Public lot-matched reports include identity, purity, and measured-content results. Affiliate terms are public.
Unresolved questions
Contamination testing was not present in the reviewed reports; one 2026 report contains method dates showing 2020 and needs clarification.
Review status
Public records reviewed
Example price
$31 / 5 mg · $42 / 10 mg
Affiliate status
20% new orders · 10% repeat orders
Public-documentation pre-screen
Documented evidence
The supplier describes HPLC/MS, sterility, and endotoxin testing and maintains a research-focused presentation.
Unresolved questions
Core reports are account-gated. Finnrick reports 29 passes and 14 failures among 43 classifiable tests, with uneven results by peptide.
Review status
Additional records requested
Example price
Pricing requires an account
Affiliate status
No public program located
Public-documentation pre-screen
Documented evidence
An organized public certificate gallery and clear affiliate terms are available.
Unresolved questions
Measured-quantity and contamination evidence remain incomplete; draw-volume and reconstitution tooling conflicts with this publication’s scope.
Review status
Public records reviewed
Example price
$51 / 5 mg · $68 / 10 mg
Affiliate status
Affiliate program available
Public-documentation pre-screen
Documented evidence
A large public batch ledger links directly to Janoshik records and includes identity, quantity, and endotoxin evidence on reviewed examples.
Unresolved questions
Specific reconstitution guidance conflicts with Peptide Due Diligence’s documentation-only editorial boundary.
Review status
Public records reviewed
Example price
$34.20+ · 5/10/15 mg options
Affiliate status
Program referenced; terms not located
Supplier review framework
The evidence fields documented consistently for every supplier.
Batch-specific documents must connect to the currently offered material.
The testing organization, report identity, and verification path must be identifiable.
Identity and chromatographic purity are assessed as separate signals.
Unit size, listed price, and ordinary shipping information are recorded together.
Contact, fulfillment, privacy, refund, and research-use policies are reviewed.
Every published record carries a visible checked date and correction history.
The framework describes available evidence and unresolved questions; it is not a ranking, safety determination, or product endorsement.
Find your starting point
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Review the supplier record, affiliate disclosure and unresolved documentation questions.