Validation and verification are becoming new buzz words in the world of food microbiology, especially when it comes to quantitative and qualitative testing. This blog will focus on qualitative testing. Under a key Food Safety Modernization Act (FSMA) requirement, food manufacturers must ensure their matrices are tested using methods that have been validated by a recognized accrediting body for that particular food category.  The main food categories found in International Standards Organization (ISO) and AOAC INTERNATIONAL guidelines are then further sub-categorized on the basis of broad food categories and microbial load and recovery. To validate a category of foods, one matrix from each sub-category must be tested according to recognized validation processes to ensure the method is applicable to all types of foods in that category. Therefore, when a non-validated matrix is being tested, it is highly recommended, and required through FSMA, that there be some type of verification conducted for qualitative testing before using the method.  This is particularly important when results are to be used for regulatory purposes.  Continue Reading