How to read a peptide Certificate of Analysis
A field-by-field guide to a peptide Certificate of Analysis: lot number, HPLC purity, mass spec identity, net content, screening and verification.
4 min readRead Testing methodsHPLC vs. mass spectrometry: purity and identity are different questions
HPLC measures how pure a peptide sample is; mass spectrometry confirms it is the right molecule. How each method works and how to read them together.
3 min readRead Testing methodsPurity vs. net content: why they are two different numbers
Purity is a ratio and net content is an amount. Why lyophilized peptide powder is never all peptide, and how to read both figures on a COA.
3 min readRead Testing methodsEndotoxin, sterility and heavy-metal testing, explained
Purity says nothing about contamination. How labs test peptides for endotoxin (LAL, USP <85>), sterility and heavy metals (ICP-MS), and how to read it.
3 min readRead StorageHow to store lyophilized peptides
Lyophilized peptides last longest cold, dry and dark. Storage temperature, moisture, light and freeze-thaw, explained for sealed research material.
3 min readRead DocumentationHow to verify a peptide COA before you trust it
A COA is only useful if it is real and matches your vial. Six checks: lot number, lab verification key, date, size, what was run, and who commissioned it.
3 min readReadLumina Labs supplies research compounds for in vitro laboratory research use only. They are not intended for human or veterinary consumption, or to diagnose, treat, cure or prevent any disease. These statements have not been evaluated by the FDA.