If an 'A' set fails, the next set is a 'B' set. If a 'B' set fails, the next set is a 'C' set, etc. FSIS will provide results only at the completion of the set. The following establishment is in the process of having a Salmonella sampling set collected. Results to-date show that this establishment could fail the sample set.
All sets are an 'A' if the previous set passes.
If an 'A' set fails, the next set is a 'B' set. If a 'B' set fails, the next set is a 'C' set, etc. FSIS will continue to sample until the sample set is complete. A third set is complete whenever the maximum number of allowed positives is exceeded. For the following sample set, all required samples have been received at the laboratory and are undergoing Salmonella analysis.