I've recently sent a sample to a third party lab for testing, Enterobacteriaceae was among the requested testing. The result came back out of spec, our threshold is less than <10CFU. The result was 20CFU. The lab Retested the sample. I've been taught that all pathogenic testing should be confirmed and not rested. Does this also include indicator testing? The sample was also tested for Salmonella and E. coli, which came back negative. Since Enterobacteriaceae is an indicator for both Salmonella and E.coli, I am concerned that the sample was retested and not confirmed.