Frequently Asked

Research peptides are short chains of amino acids supplied to laboratories and qualified researchers for in-vitro and preclinical investigation. They are not pharmaceuticals and are not intended for human or veterinary use.

Lyophilization is freeze-drying. A lyophilized peptide is a stable, dry powder that retains potency in storage and is reconstituted in solution at the point of use.

Bacteriostatic water is sterile water containing 0.9% benzyl alcohol, a preservative that inhibits bacterial growth and is used in laboratory reconstitution of lyophilized material.

Store the sealed lyophilized vial in a cool, dry place away from direct light. Once reconstituted, the mixed solution should be kept refrigerated (2–8 °C) and typically remains stable for about 6–8 weeks when properly refrigerated.

A Certificate of Analysis (COA) reports purity (typically by HPLC), molecular identity (by mass spectrometry), and quality-control results for the specific lot. Every Queen BioLabs lot has a matching COA published in our online Quality Assurance Center — look up your lot number anytime.

Purity testing uses analytical methods such as reversed-phase HPLC and mass spectrometry to confirm the percentage of target peptide present and detect impurities. Queen BioLabs products are tested to ≥99% HPLC purity.

It contains a greater total mass of research material. Vial size does not indicate potency, concentration, dosage, frequency, or intended use.

No. Vials ship as raw lyophilized peptides for in-vitro and preclinical research only. We do not provide usage instructions because we are a chemical supplier, not a compounding pharmacy or medical provider. These materials are not intended for human consumption, diagnosis, or treatment. Any purchase used for non-research purposes will result in permanent denial of service.