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.
All products are third-party tested for identity and purity.
Third-party tested
All products are third-party tested for identity and purity. Purity is 98%+ (per source specifications).
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.