Mich. Admin. Code R. 420.305a - Validations
Rule 5a.
(1) All
validations must be submitted to the agency for approval with an acceptable
proficiency test that meets the standards in R 420.305(14), where all required
analytes are shown to have passed.
(2) Laboratories shall use microbial testing
methodologies for the required safety tests in R 420.305 that are sourced from
published peer reviewed methods, have been validated for cannabis testing by an
independent third party, and have been internally verified by the licensed
laboratory according to Appendix J of Official Methods of Analysis authored by
the Association of Official Analytical Collaboration (AOAC) International, with
guidance from published cannabis standard method performance requirements where
available. In the absence of published, peer reviewed, validated cannabis
methods, Appendix J of Official Methods of Analysis authored by the Association
of Official Analytical Collaboration must be met in full with guidance from the
cannabis standard method performance requirements where available. The agency
shall approve the validated methodology used by the laboratory and confirm that
it produces scientifically accurate results for each safety test it conducts.
The agency may monitor a laboratory's microbial methodologies on an ongoing
basis. All of the following apply to validated methodologies under this rule:
(a) All validations must be submitted to the
agency for approval with an acceptable and graded external proficiency test by
a third party, where all required analytes are shown to have passed.
(b) Validation protocols should perform
inoculation of marihuana matrices with live organisms where feasible to ensure
that both extraction and detection for the assay are tested. To further test
the accuracy of the assay, probability of detection (POD) analyses,
inclusivity, exclusivity, lot-to-lot stability, and robustness studies must be
included in the validation studies.
(c) Methods adopted from a matrix specific
standard method, inclusivity and exclusivity do not require a comprehensive
reassessment, provided that there were no modifications to the methods,
including, but not limited to, all of the following:
(i) Referenced media.
(ii) Primers.
(iii) Probes.
(iv) Antibodies.
(v) Critical chemistries that were not
modified.
(d) Microbial
methods must include environmental monitoring and quality control of all
buffers, media, primers, and incubators.
Notes
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