The UK research peptide market has changed. In 2026, batch-level documentation, independent HPLC verification, and cold-chain integrity separate serious suppliers from the rest. Here's the seven-criteria framework we use internally, and believe every UK researcher should use before spending a research budget.

Study-led overview of neuropeptides in sleep and stress—orexin, CRH–ACTH and NPY—with measures used, key findings, and what remains uncertain.