Common questions
- What are research peptides?
- Research peptides are short chains of amino acids supplied for in vitro laboratory research. PepNex stocks them as lyophilised (freeze-dried) powder for research use only. They are not for human or veterinary use.
- Are PepNex peptides third-party tested?
- Yes. Every batch is analysed by an independent laboratory (Janoshik Analytical and Colmaric Analyticals) using HPLC and LC-MS/MS, and the certificate of analysis is published and searchable by lot code before and after purchase.
- Do you ship across the UK, and how fast?
- Yes. Orders are stocked and dispatched the same day from our UK facility when placed before the daily cut-off, with free UK delivery on orders over £100.
- What purity are PepNex compounds?
- Every batch is released at 98% purity or higher, measured by an independent laboratory. The figure for the exact lot you receive is printed on its certificate of analysis, and batches that come back below specification are destroyed and published in the open batch log as failures.
- Can I see a certificate of analysis before I buy?
- Yes. Every lot code resolves to its certificate on the verify page, with the measured purity, the chromatogram, the testing laboratory and the test date, whether or not you have ordered.
- Are these products for human use?
- No. All PepNex compounds are supplied strictly for laboratory research use only. They are not for human or veterinary use, and are not a medicine, food, or cosmetic.
