BSCG BLOG
Heavy Metals in Supplements: How Brands Test and Determine Compliance With Applicable Limits
Supplement brands test for heavy metals by sending finished products or raw materials to an accredited laboratory for elemental analysis, usually by inductively coupled plasma mass spectrometry (ICP-MS). The lab reports the concentration of lead, arsenic, cadmium and mercury in the sample. The brand then converts each result into a daily exposure figure using the serving size and the maximum servings per day on the label. It then compares that da...