Documentation
What a laboratory accession number tells you
How an accession or document identifier connects a submitted sample to the independent laboratory record without replacing the supplier lot number.
By Matter Compounds Editorial Team · Updated September 20, 2026 · 4 minute read
Two identifiers, two roles
Matter assigns a lot number to connect received material, inventory, labeling, and release records. An independent laboratory assigns its own accession, sample, or document identifier when the submitted sample enters that laboratory's workflow.
A strong documentation chain preserves both references. The Matter lot number identifies the supplied material inside Matter's records, while the laboratory identifier points back to the analytical record issued by the testing facility.
What to verify on a released record
The COA Library displays the identifiers reported for each released lot. An accession number is useful only when it appears with enough context to connect the report to the tested material and the corresponding lot.
- Match the material name and nominal quantity.
- Confirm the Matter lot number shown on the vial and public lot page.
- Record the laboratory name and accession or document identifier.
- Check the testing and publication dates rather than relying on a filename alone.
This educational material describes laboratory documentation and research-use boundaries. It does not provide medical, veterinary, dosing, administration, or therapeutic guidance.
