Introduction

In reproducible science, documentation is as crucial as data. A Certificate of Analysis (COA) verifies key quality attributes for each lot of a research peptide.

What a COA Includes

• Lot number and production date
• Purity and assay method (e.g., HPLC)
• Identity (e.g., MS)
• Appearance & form (lyophilized powder)
• Storage recommendations
• Analyst/QA sign-off

Why COAs Improve Research Outcomes

• Traceability: Links your data to a specific lot.
• Quality assurance: Confirms purity/identity before the first run.
• Audit-friendly: Eases internal and external reviews.
• Comparability: Enables cross-study and cross-lab consistency.

Reading Purity & Methods

• Purity %: Must match protocol needs—higher isn’t always necessary.
• Method notes: HPLC profile and MS confirm identity; look for acceptance criteria.
• Impurity profile: If listed, note thresholds relevant to your assays.

Requesting & Storing COAs

• Keep digital copies in ELN/LIMS; back up with lot-named folders.
• Cross-reference COAs in lab notebooks when reporting results.
• COAs are maintained internally for regulatory review and are not distributed to customers. For traceability questions about your order, contact support@priorityaminos.com.

When to Contact Support

• COA missing/illegible info
• Purity or identity not matching documented spec
• Discrepancies between vial label and COA lot numbers

RUO Reminder

COAs support research-only decision-making and are not a substitute for clinical validation.

Conclusion

COAs are a small investment of time that safeguard reproducibility and trust in your data.
CTA: Review COA availability in our RUO Policy and explore the shop.