The EPA, FDA, and others test food and drink for toxicants and contamination.   1)What Toxicant they test for? How they test for the given toxicant? 3) What do the results mean? (is there a healthy range vs. a dangerous range the testing can determine) 4) What these agencies will do or suggest doing to limit or lower contamination levels.

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Clinical Pharmacology

Pharmacology is a discipline of medicine that studies how medications interact with the systems and processes of living organisms, focusing on drug action mechanisms as well as therapeutic and other purposes.