A Certificate of Analysis (CoA) is a document attesting that your dietary supplement has undergone specified testing and adheres to its product specifications and standards.
Maximum levels for the sum of dioxins and dioxin-like PCBs (WHO-PCDD/F-PCB-TEQ) for marine oils:
European Commission: 6.0 ng/kg
Iceland and Norway (stricter laws): 5.0 ng/kg
True Westfjords Ltd. (Dropi) operates under the strict inspection of the Icelandic Food and Veterinary Authority (MAST) and has been one of MAST's approved food establishment since 10/04/2014. See list of all approved food establishments, including True Westfjord, here.
Dropi receives CoA for every batch produced. You can see the CoA for your batch of Dropi on the traceability site.