About the laboratory
ILS Laboratories is an independent analytical testing laboratory in San Diego, California, offering chemistry, microbiology and quality-control testing for research-use peptides and other regulated materials.
PX1 Research submits batches to ILS for HPLC purity and quantitation. Every certificate ILS issues for a PX1 lot is published in our COA archive, matched to the exact product, strength and batch number.
Testing capabilities
Purity & quantitation (HPLC)
Reversed-phase HPLC reporting purity percentage and net peptide content.
Endotoxin (USP <85>)
Kinetic chromogenic LAL method, reported in EU/mg.
Rapid sterility screen
DNA microarray detection of a broad microbial panel.
Heavy metals (ICP-MS)
Multi-element screening for residual synthesis metals.
Mass spectrometry (LC-MS)
Identity and structural confirmation.
Digital COAs
QR-verified certificates with LIMS traceability.
See ILS Laboratories certificates for PX1 batches
Search our archive by product, strength or batch number.
Open COA library