A Certificate of Analysis (COA) is a lab-generated document detailing your peptide’s identity, purity, and content. At Midwest Peptide, all COAs are generated by Chromate, a trusted U.S.-based laboratory. Our COAs also include endotoxin testing, ensuring your research uses high-quality, verified compounds.
Most peptides should be stored lyophilized (freeze-dried) at -20°C. Once reconstituted, keep them in a refrigerator (2–8°C) and avoid repeated freeze-thaw cycles. Always protect from light and moisture to maintain stability.
Use sterile, high-purity water or a recommended solvent. Gently swirl to dissolve—do not shake vigorously as this can damage the peptide. Check your COA for any specific reconstitution instructions.
Stability depends on storage conditions and the peptide itself. Lyophilized peptides stored at -20°C can remain stable for months to years. Reconstituted peptides should be used quickly and stored at 2–8°C. Always verify activity before use in experiments.
All orders are shipped in protective, shock-resistant packaging with insulation to guard against temperature swings and physical damage. Whether you order a single vial or a full kit, we ensure your peptides arrive safely and ready for use.
Yes. In addition to purity and content, all peptides undergo endotoxin testing to minimize the risk of contamination in research applications.
No not at the moment but we are working on implementing this soon
Contact me at info@midwestpeptide.com as soon as possible. We inspect and package all products carefully, and we will work with you to resolve any issues.
Yes. We offer flexible ordering options for research labs of all sizes. Contact me at info@midwestpeptide.com to discuss bulk pricing or custom requests.