How to Read a Research Compound COA

What to review on a COA

Useful items to check include:

• the product or sample identifier and labeled amount;
• a report or COA number unique to that document;
• the testing laboratory's name;
• the analytical method(s) used (see below);
• the reported results themselves; and
• any lot or batch reference connecting the report to the specific material tested.

Understanding the method named

If the report lists HPLC or LC-MS, it matters which one—and what that specific method actually measures. An HPLC area percentage is a relative chromatographic purity result under stated conditions; it is not automatically a mass-balance measurement of everything in the sample. LC-MS provides molecular-identity evidence but does not establish purity by itself. The HPLC vs. LC-MS guide covers this distinction in more depth, including a full checklist for reading either type of report.

Lot-specific documentation

Analytical results in a COA apply to the tested sample or lot represented by that particular report—not to every unit ever sold under a product name. A later production lot may be tested and documented separately. When reviewing a listing, confirm that the COA referenced corresponds to the current lot, not an older or unrelated one.

A COA should not be interpreted as medical approval, therapeutic validation, or authorization for human or veterinary use. It documents analytical testing results only.

Quick checklist before relying on a COA

1. Sample identity: Does the name and labeled amount on the report match the product listing?
2. Report number: Is there a unique report or COA number you can reference?
3. Laboratory named: Does the report identify the testing laboratory?
4. Method stated: Does it say which analytical method(s) were used, and do you understand what that method actually shows?
5. Lot reference: Does the report tie to a specific, current lot rather than a generic or historical one?
6. Result basis: Is it clear whether "purity" refers to area percent, assay against a standard, or another defined calculation?

What a COA does not establish

A COA documents the specific analytical testing performed on the represented sample. Depending on the scope of testing, it does not necessarily establish absolute content against a reference standard, sterility, endotoxin levels, water content, or long-term stability—those require separate, specifically designed tests. A COA is one piece of documentation, not a complete quality dossier by itself.

DAAVY COA access

DAAVY Research links third-party reports directly from each product listing and from the COA Library. Documentation for every currently listed product is available to review through those links, and the COA viewer is protected against download to keep the reports tied to their original source.