ArticleJournal of AOAC International2023
PathogenDx DetectX Combined Demonstrates Equivalent Performance in Comparison to Four AOAC Certified Methods for the Detection of Aspergillus Species, Salmonella Species, and STEC in Dried Hemp Flower.
Article in Journal of AOAC International, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe PathogenDx DetectX Combined method is a certified Performance Tested MethodSM (012201) that is enrichment-free and utilizes a DNA microarray-based end point PCR method for the simultaneous detection of Aspergillus (A. flavus, A. fumigatus, A. niger, and A. terreus), Salmonella spp., and a broad range of Shiga toxin-producing Esherichia coli (STEC) from hemp and cannabis flower, edibles, and concentrates.
objectiveThis study aimed to compare the PathogenDx DetectX Combined enrichment-free method to four AOAC INTERNATIONAL certified molecular methods that utilize enrichment prior to quantitative PCR (qPCR) amplification in hemp flower for the detection of Aspergillus (A. flavus), S. enterica, and Escherichia coli 026.
methodsIn this method comparison study, each method was evaluated according to the AOAC validated instructions for use (IFU) and the AOAC Appendix J validation guidelines. A total of 16 samples at three levels of contamination (0, 0.7, and 2 CFU/10g test portion) were analyzed by each method. The results for all methods were evaluated by using the probability of detection statistical model (POD).
resultsResults of the validation study demonstrate that the PathogenDx DetectX Combined enrichment-free method is equivalent in performance to the three proprietary methods evaluated in this study.
conclusionThe method comparison study indicated that the PathogenDx DetectX Combined enrichment-free method provides equivalent detection of the target analytes (A. flavus, Salmonella, and a broad range of STEC) in hemp flower. HIGHLIGHTS: The performance of The PathogenDx DetectX Combined method is significantly faster and possesses a higher or equivalent degree of sensitivity and specificity. Implementation of this method for routine microbial pathogen analysis in laboratories would save significant time and resources.
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