How We Test
Six-step independent testing protocol. Five scoring categories. Transparent, reproducible, and published regardless of outcome.
Our Testing Process
Every vendor test follows the same six-step protocol, whether the samples come from a vendor submission or a mystery purchase.
Sample Acquisition
Samples are either submitted by the vendor or purchased anonymously from their website.
HPLC Purity Analysis
High-Performance Liquid Chromatography determines the percentage of the target peptide versus impurities. This is the single most important quality metric.
Mass Spectrometry
MS confirms the identity of the peptide by matching observed molecular weight to the expected value. A sample can be pure but still be the wrong compound.
Sterility Screening
Endotoxin and microbial contamination testing for products intended for sterile applications.
COA Verification
We compare the vendor-provided Certificate of Analysis against our independent results to measure transparency and accuracy.
Publication
All results are published on the vendor profile page with full component scores, composite grade, and detailed test data.