Why is this so important?

Quality & Safety

• Peptides are research compounds with high purity requirements. A COA documents the exact purity level (typically 95%+, sometimes 99%+), which directly affects research validity and safety.

• It confirms the product hasn't been contaminated, degraded, or substituted with cheaper/harmful alternatives.

Research Integrity

• If you're using peptides for research, a COA proves your baseline quality. Results are only reproducible if the input material is verified.

• Peer review, regulatory bodies, and collaborators often require documented purity/authenticity to validate findings.

Regulatory & Legal Protection

• Peptides exist in a gray zone (research vs. therapeutic use). A COA from a reputable supplier creates a paper trail showing you sourced from a legitimate vendor—important if regulatory questions arise.

• Protects you if the product is later questioned or recalled.

Supplier Credibility

• A vendor willing to issue detailed COAs (with batch numbers, testing dates, third-party lab verification) signals they stand behind their product and have quality controls in place.

• Vendors without COAs are often red flags for lower quality or unverified sourcing.

What a strong peptide COA should include:

• Peptide name & batch/lot number

• Purity percentage (e.g., "98.5% HPLC verified")

• Molecular weight confirmation

• Testing date & expiration/stability info

• Third-party lab name (not just the supplier's own lab)

• Certificate number for traceability