Why Seaweed Testing Must Measure Cadmium and Inorganic Arsenic — page updateshttps://heavymetalcertified.com/articles/seaweed-cd-as-contaminationPublished revisions of this Heavy Metal Certified page.Why Seaweed Testing Must Measure Cadmium and Inorganic Arsenichttps://heavymetalcertified.com/articles/seaweed-cd-as-contaminationhttps://heavymetalcertified.com/articles/seaweed-cd-as-contamination#revision-8c5732bfdfc05cbfMon, 21 Sep 2026 04:04:58 GMTEdible seaweed and kelp carry elevated cadmium and inorganic arsenic through algal biology, so a seaweed standard must test both, not total arsenic alone.