There are five or six core tests within the ACMPR quality control measures. As you mentioned, potency; the presence of heavy metals; aflatoxins, which are fungal toxins produced through spoilage; bacteria and mould; and pesticides. The sixth area in the case of extracts and oils is residual solvents. It's an add-on measure.
On September 13th, 2017. See this statement in context.