Certificate of Analysis (COA): Nutricost Zinc Picolinate
re: magnesium
re: certificate of analysis
See Certificate of Analysis for Food Supplements: How to Interpret.
I obtained the COA for Nutricost Zinc Picolinate.
Levels for lead (Pb), arsenic (Ar), cadmium (Cd), Mercury (Hg) are all extremely low, exemplary. Outstanding!
Nutricost Zinc Picolinate @AMAZON

Certificate of Analysis (COA) for Nutricost Zinc Picolinate