Rigorous Testing

Every batch. Every assay. Every time.

Not only can you be sure you're getting the molecule you order — you can verify it. Every batch undergoes rigorous independent 3rd-party testing for purity, potency, and endotoxins, with a downloadable report attached to every product.

What We Test

Three assays on every single batch.

No batch reaches our catalog without passing all three. Here's what each one tells you.

HPLC

Purity

High-performance liquid chromatography confirms the compound is what it claims to be, and quantifies impurities down to fractions of a percent.

Mass Spectrometry

Potency

Mass-spec verification confirms molecular identity and concentration, so the stated amount in each vial is the amount that's actually there.

LAL Assay

Endotoxins

Limulus amebocyte lysate testing screens every batch for bacterial endotoxins — a critical safety check that most suppliers skip.

Our Process

From synthesis to certificate.

Synthesis & sourcing

Compounds are produced under controlled conditions and assigned a unique batch number that follows them through the entire process.

Independent sampling

A sample from every batch is sent to an accredited, independent 3rd-party laboratory — not an in-house team with an incentive to pass.

Three-assay panel

Each sample is tested for purity, potency, and endotoxins. A batch that fails any assay never reaches the catalog.

Published certificate

Results are compiled into a batch-specific certificate of analysis, made available for download so you can verify before you order.

Verify Before You Buy

Every product carries its own certificate of analysis.

The COA lists the batch number, test dates, the independent lab, and the measured result for each assay. It's the difference between trusting a label and verifying a fact. Look for the downloadable report on any product page.

Browse tested compounds

Certificate of Analysis

GHK-Cu · Batch #A2406

Passed

Compound identity: Confirmed (MS)
Purity (HPLC): 99.2%
Endotoxins (LAL): < 0.05 EU/mg
Tested by: Independent 3rd-party lab
Report date: 2026-04-12

Sample shown for illustration.