degraded peptide FAQ

Visual clarity does not guarantee potency. If you know the vial was stored above 8°C for extended periods (more than 8 hours total) or left at room temperature overnight, assume partial degradation has occurred regardless of appearance. Hydrolysis and oxidation happen at the peptide bond level and produce degradation products that remain soluble. They don't form visible precipitates until aggregation is severe. The conservative approach: if storage discipline was broken at any point, discard the vial. Peptides are expensive, but unreliable research data from degraded compounds costs more in wasted time and invalid results.