The CMA test of CapitalBio Technology uses Affymetrix GeneChip System 3000Dx and CytoScan 750K CMA chip, it can not only provide accurate detection of chromosomal gene abnormalities, and provide an effective diagnostic basis for clinical birth defects, but also provide corresponding value-added services of prenatal data analysis and report interpretation, which is more convenient for clinicians' daily diagnosis and practical application.