In histology, CNVs can be detected using several techniques. Fluorescence in situ hybridization (FISH) allows for the direct visualization of CNVs in tissue sections using fluorescent probes. Comparative Genomic Hybridization (CGH) and array-based CGH are also employed to compare differences between normal and abnormal DNA. Next-Generation Sequencing (NGS) offers a more detailed view and is increasingly used in research and clinical settings.
