COAs help, but some are unfortunately very easy forged.

Reliability depends completely on the lab’s actual reputation.

Many shady suppliers reuse old COAs without verification.

Always cross-check batch numbers; fakes often mismatch badly.

Third-party documents help, but never guarantee real purity.

Scammers copy templates, making forged COAs look convincing.

Real COAs include unique identifiers hard to replicate.

Trustworthy labs offer verifiable contact details for confirmation.

Transparency matters more than shiny paperwork alone does.

Best approach remains independent testing, not trusting COAs.