Microbiology-PTM-OMA_Modules_1-5

Performing the Study – Qualitative Methods

• Begin all enrichments on the same day • Blind coded candidate method test portions or environmental swabs/sponges • Blind coded reference method test portions or environmental swabs/sponges • MPN test portions (if applicable) • Follow each method as written • Use most current published version of the reference method • Confirm every enrichment (candidate, reference, and MPN  enrichments) according to the reference method procedures • Confirm candidate method enrichments according to alternate  candidate method confirmation procedure, if applicable