Connect documents to a batch
A useful certificate identifies the submitted sample, date, method and laboratory. Check whether the batch identifier shown in the report also appears on the product record and whether the laboratory offers a way to confirm the report independently.
Check identity across time
Domains, usernames, email addresses and payment identities can change. A transparent history explains those changes. Impersonation reports are easier to evaluate when the exact contact channel and date are recorded without exposing personal customer data.
Use a pattern, not a vote count
Review totals can be manipulated or stripped of context. Give more weight to dated first-hand reports, resolved and unresolved complaints, independent documentation and the source’s response pattern than to a simple positive-versus-negative score.