Testing & quality
How we approach quality across the HelixCore catalogue.
Purity matters in research. Even small amounts of synthesis impurities or breakdown products can confound a study — particularly in in-vitro work at low concentrations. We treat that seriously across every product we list.
Every batch is tested for identity and purity before it reaches our UK stock.
Batch tested
Every batch is tested for identity and purity (98%+) before it reaches our UK stock.
Standard analytical methods
Batch tests typically use HPLC for purity and mass spectrometry for identity confirmation — the methods used across the research peptide industry.
UK stock, UK dispatch
Stock is held in the United Kingdom — no overseas drop-shipping, no customs delays. Orders placed before 2pm dispatch the same business day via Royal Mail Tracked 24 in plain, lab-appropriate packaging. Peptides ship lyophilised (freeze-dried) for transit stability.
Ready to order?
Browse the catalogue — every product has been through this process.