Heavy metals that build up in the body are dangerous for human health. The main elements that should be tested are arsenic (As), mercury (Hg), cadmium (Cd), and lead (Pb). These elements are highly toxic metals and very strong poison. It could come from high levels of heavy metals in soil and water that eventually show up in the plant material we harvest and ingest. To avoid any of that, Overseas Organix always makes sure that our Kratom is free from heavy metals and safe for consumption.