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Free shipping on research orders over $200 — every batch HPLC & MS tested.Free shipping on research orders over $200 — every batch HPLC & MS tested.Free shipping on research orders over $200 — every batch HPLC & MS tested.Free shipping on research orders over $200 — every batch HPLC & MS tested.
Helix Peptides

Quality

We publish the data before you buy, not after you ask

Every batch goes to an independent analytical laboratory. We do not self-certify. The chromatogram, the mass spectrum and the water content are on the product page before an order is possible.

What we test

Four assays on every batch

Purity tells you the material is clean. Identity tells you it's the right molecule. Water and peptide content tell you how much of it you actually have. You need all four.

≥99%

RP-HPLC purity

C18 column, 0.1% TFA mobile phase, detection at 214 nm where the peptide bond absorbs. We publish the chromatogram, not just the integrated number — so you can see whether that 1% is one impurity or twenty.

Identity confirmed

ESI mass spectrometry

Electrospray ionisation with charge-envelope deconvolution. Observed mass is compared against theoretical; the spectrum goes on the certificate so you can check for deletion sequences and oxidation products yourself.

Water content stated

Karl Fischer titration

Lyophilized peptides are hygroscopic. A vial labelled 10 mg that is 12% water contains 8.8 mg of peptide — which quietly wrecks your concentrations. We measure it and state it.

Reported per batch

Net peptide content

Purity and content are different numbers. A TFA salt of a lysine-rich peptide can be a quarter counter-ion by mass. We report both so your dilutions start from the right figure.

Verify us independently — we'll help

Send a sample to whichever laboratory you trust. Tell us which one and we'll share our exact method parameters so the comparison is like-for-like rather than an argument about gradients.

If an independent result materially contradicts our certificate, we refund the order in full, withdraw the batch, and notify everyone who received it. We keep retained samples of every lot specifically so that process is possible.

Request method parametersHow to read a COA
Testing laboratoryIndependent — never in-house
Purity specification≥99% by RP-HPLC at 214 nm
Identity methodESI-MS with deconvolution
Water contentKarl Fischer titration
Retained samplesEvery batch, held for re-assay
TraceabilityBatch number on vial, box and COA

COA library

38 published certificates

Every batch we have shipped, with the independent report for each. Check the batch number on your vial against this list.

Epitalon

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BatchSizePurityTestedLaboratoryReport
EPI-0824AAll sizes99.53%May 28, 2026Janoshik AnalyticalView

Tesamorelin

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BatchSizePurityTestedLaboratoryReport
TSM-0824AAll sizes99.11%May 27, 2026Janoshik AnalyticalView
TSM-0824BAll sizes99.11%May 27, 2026Janoshik AnalyticalView

KPV

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BatchSizePurityTestedLaboratoryReport
KPV-0824AAll sizes99.42%May 25, 2026Janoshik AnalyticalView

GHK-Cu (Copper Peptide)

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BatchSizePurityTestedLaboratoryReport
GHK-0824BAll sizes≥99.06%Apr 24, 2026Janoshik AnalyticalView
GHK-0824CAll sizes≥99.06%Apr 24, 2026Janoshik AnalyticalView
GHK-0824AAll sizes99.06%Apr 24, 2026Janoshik AnalyticalView

Semax

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BatchSizePurityTestedLaboratoryReport
SMX-0824AAll sizes99.24%Apr 24, 2026Janoshik AnalyticalView
SEM-0924BAll sizes≥99.24%Apr 24, 2026Janoshik AnalyticalView

BPC-157

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BatchSizePurityTestedLaboratoryReport
BPC-0824AAll sizes99.41%Apr 24, 2026Janoshik AnalyticalView
BPC-0724CAll sizes≥99.41%Apr 24, 2026Janoshik AnalyticalView
BPC-0724BAll sizes99.28%Feb 3, 2026Janoshik AnalyticalView

BUY TB-500 (Thymosin Beta-4 Fragment)

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BatchSizePurityTestedLaboratoryReport
TB5-0824AAll sizes99.22%Apr 24, 2026Janoshik AnalyticalView
TB5-0824BAll sizes≥99.22%Apr 24, 2026Janoshik AnalyticalView

Selank

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BatchSizePurityTestedLaboratoryReport
SLK-0824AAll sizes99.14%Apr 24, 2026Janoshik AnalyticalView
SLK-0824BAll sizes99.14%Apr 24, 2026Janoshik AnalyticalView

BUY Semaglutide

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BatchSizePurityTestedLaboratoryReport
SEM-0824CAll sizes99.51%Apr 18, 2026Janoshik AnalyticalView
SEM-0824EAll sizes99.64%Feb 25, 2026Janoshik AnalyticalView
SEM-0924AAll sizes99.62%Feb 25, 2026Janoshik AnalyticalView
SEM-0824BAll sizes99.64%Feb 25, 2026Janoshik AnalyticalView

NAD+

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BatchSizePurityTestedLaboratoryReport
NAD-0824AAll sizes99.18%Mar 26, 2026Janoshik AnalyticalView
NAD-0824BAll sizes99.18%Mar 26, 2026Janoshik AnalyticalView

CJC-1295 (with DAC)

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BatchSizePurityTestedLaboratoryReport
CJC-0824AAll sizes99.08%Feb 25, 2026Janoshik AnalyticalView

AOD-9604

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BatchSizePurityTestedLaboratoryReport
AOD-0824AAll sizes99.03%Feb 20, 2026Janoshik AnalyticalView

Hexarelin

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BatchSizePurityTestedLaboratoryReport
HEX-0824AAll sizes99.04%Feb 20, 2026Janoshik AnalyticalView

Ipamorelin

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BatchSizePurityTestedLaboratoryReport
IPA-0824AAll sizes99.31%Feb 20, 2026Janoshik AnalyticalView
IPA-0824BAll sizes≥99.31%Feb 20, 2026Janoshik AnalyticalView

Sermorelin

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BatchSizePurityTestedLaboratoryReport
SER-0824AAll sizes99.05%Feb 20, 2026Janoshik AnalyticalView

Tirzepatide

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BatchSizePurityTestedLaboratoryReport
TZP-0924BAll sizes≥99.34%Jan 27, 2026Janoshik AnalyticalView
TZP-0924AAll sizes99.34%Jan 27, 2026Janoshik AnalyticalView
TZP-0924CAll sizes≥99.34%Jan 27, 2026Janoshik AnalyticalView

MOTS-c

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BatchSizePurityTestedLaboratoryReport
MTC-0924AAll sizes99.07%Jan 27, 2026Janoshik AnalyticalView
MTC-0924BAll sizes≥99.07%Jan 27, 2026Janoshik AnalyticalView

Thymosin Alpha-1

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BatchSizePurityTestedLaboratoryReport
TA1-0824AAll sizes99.21%Jan 21, 2026Janoshik AnalyticalView
TA1-0824BAll sizes99.21%Jan 21, 2026Janoshik AnalyticalView

Retatrutide

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BatchSizePurityTestedLaboratoryReport
RTT-0924BAll sizes99.12%Dec 15, 2025Janoshik AnalyticalView
RTT-0924AAll sizes99.12%Dec 15, 2025Janoshik AnalyticalView
RTT-0924CAll sizes99.12%Dec 15, 2025Janoshik AnalyticalView