Broad-based genetic mutation association gene transcript test and data structure. Genetic mutation considerations for this unique test include a custom set of genetic sequences associated in peer-reviewed literature with various known genetic mutation related to exposure to toxic substances. Such genetic mutations include specific gene sequence alterations based on exposure to diesel fuel, aviation fuel, jet fuel, and many other toxic substances often needed in the aviation and refining industries. The base dataset may be developed through clinical samples obtained by third-parties. Online access of real-time phenotype/genotype associative testing for physicians and patients may be promoted through an analysis of a customized microarray testing service.