How to Understand a Certificate of Analysis
A Certificate of Analysis, usually shortened to COA, is a laboratory’s record of what it tested and what it found. This page explains the fields commonly found on one, why a report only means something when matched to the correct batch, and what a COA does not establish. It is general educational information about reports, not guidance about using any product.
What a Certificate of Analysis is
A COA records the tests performed and the results reported for a submitted sample. It does not certify suitability, safety, efficacy, or approval for a particular use.
Everything on the document refers to the sample submitted and the tests actually run on it.
Match the report to the correct batch
A report describes one batch. A different batch of the same compound has its own report. The Caliber Research Quality Reports archive groups documentation by product and batch so current and historical reports remain clearly separated.
A report applies only to the batch it was issued for; results do not carry across to any other batch.
Common report fields
- Product or compound name
- The compound the laboratory was asked to examine. Worth checking against the label, including strength and any blend components.
- Batch or lot number
- The identifier tying the report to a specific production run. This is the field that makes the rest of the report meaningful.
- Testing laboratory
- The facility that performed the analysis. Laboratory names appear on the reports themselves. Caliber Research uses independent laboratories and does not operate its own; which laboratory performed a given test may differ by report, batch, or compound.
- Test or report date
- The date identifies when the test was performed or the report was issued. It is a record of timing on the document itself.
- Identity result
- Whether the submitted sample corresponds to the named compound, as determined by the laboratory's stated method. Confirming analytical identity is distinct from establishing suitability for any use.
- Mass and purity result
- The measured mass and purity values reported for the submitted sample using the laboratory's stated method. The purity value is a measurement produced by that method and is not a complete accounting of every component in the sample.
- Endotoxin result
- Bacterial endotoxin measured in the submitted sample, reported against the laboratory's stated limit. It is distinct from sterility testing and should not be interpreted as a sterility result.
Not every report looks the same
Laboratories format reports differently. Field names, layout, ordering, units, and how results are expressed vary between facilities, and the laboratory may vary by batch or compound. Analytical methods also vary and are identified on the report. There is no single universal COA template, and an unfamiliar layout is not automatically suspect. Read for the substance — compound, batch, date, laboratory, method, results.
What a COA does not establish
A COA documents the tests shown on it. It does not document tests that were not run.
- It does not establish sterility. Endotoxin testing measures bacterial endotoxin in the submitted sample; it is distinct from sterility testing and should not be interpreted as a sterility result. Caliber Research does not normally perform sterility testing and makes no sterility claim.
- It does not certify suitability, safety, efficacy, or approval for a particular use.
- It does not carry over to another batch.
- It does not describe how material was stored or handled after testing.
- It is not medical evidence and implies nothing about human or veterinary use.
Where to find Caliber Research Quality Reports
Reports are collected in the Quality Reports archive, grouped by compound and then by batch, with past and retired batches retained permanently.
Report file access
The public archive shows which reports are available for each product and batch. Access to the underlying report files is limited to registered members under Caliber Research’s current document-access policy.
Research use only
For research purposes only. No human or veterinary use. Products are not intended to diagnose, treat, cure, or prevent any disease or condition. Nothing on this page is medical, dosing, or handling guidance.
Last reviewed: July 2026