Testing & quality
Assay
Any analytical procedure that measures the presence, amount, or activity of a substance.
In plain terms
Every claim on a certificate corresponds to a specific assay, with a specific method and specific limits. "Tested" is not a property; the question is always tested for what, by which method.
Educational reference only. Pepperz does not provide medical advice, diagnosis, treatment, prescribing guidance, or dosing recommendations.