Peptide Help Center (All your Peptide Information/Instructions)

1. Peptide purity directly determines safety and efficacy — underdosed or contaminated peptides can cause harm
2. The research peptide market is largely unregulated — buyer due diligence is essential
3. Impurities such as bacterial endotoxins, residual solvents, and synthesis byproducts are common in low-quality products
4. Counterfeit or mislabeled peptides are widespread — third-party testing is the only reliable safeguard
5. A peptide at 70% purity behaves like a lower dose with unknown contaminants filling the remainder

1. Certificate of Analysis (CoA) available for every batch — not just a generic company-wide certificate
2. HPLC (High-Performance Liquid Chromatography) purity testing — minimum 98% purity for research grade
3. Mass spectrometry (MS) verification — confirms the correct molecular weight and sequence
4. Endotoxin testing (LAL test) — critical for injectable peptides
5. Third-party testing — CoAs from independent labs, not the manufacturer’s own lab
6. Transparent sourcing — supplier should disclose synthesis origin and testing laboratory
7. Proper lyophilization and cold-chain shipping — ensures stability during transport

Our Recommended Supplier