VivaLab results library
Every lot we release is assayed by an independent laboratory. HPLC establishes purity, mass spectrometry confirms identity. The certificate for each published lot is here — read it before you order, not after.
Lot certificates are published here as each batch clears testing. In the meantime, email hello@vivapeptides.ca with a product name and we will send the current lot certificate directly.
HPLC purity
High-performance liquid chromatography separates the sample by component. The purity figure is the main peak's area as a percentage of total peak area — and we publish the trace, not just the number.
Mass spectrometry
MS confirms identity by measuring molecular weight against the theoretical mass for the sequence. A very pure sample of the wrong compound is still the wrong compound.
Lot matching
The lot on the certificate matches the lot printed on your vial. That link is the entire point of a COA — and the first thing worth checking on anyone's.
How to read a certificate of analysis
Not sure what you are looking at? Our guide walks through each section, what a good chromatogram looks like, and the red flags worth knowing about.
Read the guide