The testing required for safe, legal supplements is technical and can be difficult for brand owners to understand if they don’t have a scientific background. Brands may hire contract labs to conduct validated tests the help meet requirements for GMPs (good manufacturing practices); however, brand owners are still obligated to examine and verify that contract labs are following all safety measures. In this episode, Blake Ebersole, president, NaturPro Scientific LLC, and Sandy Almendarez, editor in chief, INSIDER, discuss: tips for auditing a contract lab for the rigorousness of its tests, the effects the passage of the Food Safety Modernization Act (FSMA) had on testing requirements, and FDA’s definition of “validated method.”