Start with the batch number
Before looking at the analytical results, confirm:
A test result from another batch does not necessarily establish the characteristics of the batch in your possession.
Purity
You may see a result such as:
Purity represents the proportion of the analysed material attributed to the target compound under the analytical method used. It should not be confused with dosage, concentration or quantity.
HPLC
HPLC stands for High-Performance Liquid Chromatography. It is an analytical technique used to separate and measure components within a sample.
A chromatogram displays detector response over time. The primary peak generally corresponds to the dominant detected component under the test conditions, while smaller peaks may represent other detected components.
Mass spectrometry
Mass spectrometry provides information about the molecular mass characteristics of a compound. It can be used as part of identity verification by comparing analytical observations with the expected molecular characteristics.
Identity
A COA may state:
This indicates that the analytical information used for identity assessment was consistent with the expected compound under the applicable test methodology.
Test date
Always check when testing occurred. Analytical documentation should identify the relevant batch and testing information clearly enough for researchers to understand what was tested.
Release status
Where shown:
indicates that the batch passed the supplier’s applicable release criteria.
What a COA does NOT tell you
A COA should not be interpreted as evidence that a research compound is approved to diagnose, treat, prevent or cure a medical condition. It is analytical documentation — not medical approval.
The 99.9% rule
Before relying on a laboratory document, check:
This guide provides general information relating to laboratory research materials and product handling. It does not provide medical advice or instructions for human consumption or self-administration.