Peptide Endotoxin Testing: The LAL Assay in Research
Peptide endotoxin testing with the LAL assay: what EU/mg limits mean, how LPS contamination causes false cell results, and what COA data to request.
Tag: HPLC testing
What Is a Peptide Reference Standard?
Peptide reference standards: what USP CRMs are, how HPLC calibration uses them, and why certified purity traceability matters in research.
How to Read a GHK-Cu COA: HPLC Data Explained
How to read a GHK-Cu COA: what HPLC peak area, mass spec molecular weight, and lot number data mean for research-grade copper peptide.
What Is HPLC Testing? How Peptide Purity Is Verified in Research Labs
Last updated: May 2026 HPLC testing is the main way labs check peptide purity. HPLC stands for high-performance liquid chromatography. It separates compounds in a sample. Each compound exits the column at a different time. The instrument records a graph called a chromatogram. According to published research indexed on PubMed (2019), HPLC can detect impurities […]
What Makes a Peptide Research Grade? Standards and Testing Explained
Research-grade peptides explained: HPLC purity testing, mass spectrometry verification, Certificate of Analysis structure, and sourcing checklist for labs.
Research-Grade Peptides: Purity Standards and Sourcing
Research-grade peptide sourcing explained: purity limits, HPLC and mass spec testing, COA record standards, and red flags for lab compound selection.