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Mycotoxin testing can only provide useful lot-level information when the submitted sample adequately represents the material being evaluated.
Mycotoxins may be unevenly distributed, so sampling design is particularly important.
Know:
A single grab sample may miss localized contamination.
Sampling should represent different parts of the material rather than one convenient location.
Compositing can provide an average.
But it can also dilute localized contamination.
Retained units may be useful if the composite gives an unexpected result.
Ask PBR about sample requirements before collecting material from a large or heterogeneous lot.