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A result outside the applicable microbiological specification means the submitted sample did not meet the established criterion for that test.
It does not automatically identify the contamination source.
Review:
Possible areas may include:
Not automatically.
Repeating the analysis without investigating why the original result was unexpected may produce another number without answering the underlying question.
PBR's decision framework specifically emphasizes selecting follow-up testing around the investigation rather than treating retesting as the default response.
Depending on the result:
Speak with PBR about the result, product matrix and investigation before selecting follow-up testing.