Evaluate the performance of nucleic acid tests for determination of the presence of targeted bacterial and viral nucleic acids Formulated with purified, intact organisms Organisms are chemically modified to render them noninfectious Refrigerator stable—store between 2 and 8°C NATtrol EP Controls are supplied in stool diluent Stool diluent contains stabilizers and antimicrobial agents NATtrol™ products are ready-to-use, inactivated full process controls designed to evaluate performance of molecular tests. They can be used for verification of assays, training of laboratory personnel and to monitor assay-kit lot performance. NATtrol products contain intact organisms and should be run in a manner similar to clinical specimens.