A ONE% research-peptide vial being reconstituted

Research Peptides · Europe

Raise Your
Standard.

A standard isn’t something you claim. It’s what you repeat.

We hold what we make to the same rule: every batch third-party tested, every COA released with it.

>99%Purity Target
COAEvery Batch
3rd-PartyLab Tested
Vial + PenBoth Available

Find Your Starting Point

Pick The Result.
We'll Match The Peptide.

A ONE% athlete

Our Standard · Verified, Not Claimed

Made To Be
Verified.

These are not shelf supplements. Every compound is synthesised against a >99% purity target, assayed by Janoshik, an independent analytical laboratory, and released with the certificate that proves it.

COA Verified Tirzepatide 20mg research vial
Vial
ONE% Pen, reusable injector
Pen

The Compound · The Instrument

Bought Once.
Used Always.

Every compound ships as a lyophilised vial, reconstituted in the lab to whatever your protocol requires. The ONE% Pen is the instrument you load it into, machined aluminium, reusable, and not tied to any single compound.

  • The vial, lyophilised powder, reconstitute to any concentration your protocol needs.
  • The pen, a reusable injector for graduated, repeatable delivery. Ships empty.
  • One standard, every batch third-party tested, every COA released with it.

The Proof · Verified, Not Claimed

Proof,
Not Promises.

Every batch is analysed by an independent laboratory before it ships. Identity confirmed by mass spectrometry, purity quantified by HPLC, and the certificate travels with the vial, not on request.

CERTIFICATE OF ANALYSIS >99% PURITY LAB TESTED · ONE%
Purity AnalysisHPLC · UV 214nm
>99% main peak · 6.4 min
Identity · Mass Spectrometry Confirmed
Purity · HPLC ≥99%
Appearance · Visual Pass
Independent Laboratory Janoshik
Representative analysis. Every batch releases with its own Certificate of Analysis.

What Every COA Proves

  • Identity confirmed by mass spectrometry
  • Purity quantified by HPLC against a >99% target
  • Analysed by an independent laboratory, not in-house
  • Batch-matched and traceable to the vial in your hand
  • Released with the certificate, never on request
Independently Tested ByJanoshik Analytical
Mass Spectrometry·HPLC Purity·Independent Lab·Batch-Matched·Released With Every Vial

From Education

Notes From The 1%.

All articles
Behind The Brand

How We Built ONE%: One Standard, Every Batch

The peptide market is full of claims nobody documents. We set out to build the opposite, and to show our work.

Compound Deep-Dive

Retatrutide: Inside The Triple-Agonist Everyone Is Watching

One molecule, three metabolic receptors. Why it became the reference point for the field’s most-watched research.

Compound Deep-Dive

BPC-157: The Repair Peptide, Explained

A fifteen-amino-acid fragment that turns up across tissue-repair research. The plain-language version.

Why Researchers Choose Us

Documented,
Not Claimed.

The reasons labs across the EU standardise on ONE%.

COA Before The Vial

Every batch ships with its Certificate of Analysis, available before you order, never after a dispute.

Purity You Can Verify

Identity by mass spectrometry, purity by HPLC against a >99% target, confirmed by an independent laboratory.

Handled, End To End

Cold-chain, discreet, tracked EU delivery in 24 to 48 hours. The logistics are handled so the research is not.

>99%Purity target 100%Batches tested EU-wideCold-chain delivery Independently Tested ByJanoshik Analytical
An athlete lowering to the light

The 1% · A Decision

Power Is Given To Those Willing To Lower Themselves To Pick It Up.

Raise Your Standard.

Talk To Us

Our Team Is
Ready For You.

Certificates of analysis, wholesale, or anything else, send a note and we answer as fast as we test.

info@onepercentpeptides.com