Ventana Medical Systems

Ventana Medical Systems is a tissue diagnostics and pathology automation company founded in Tucson, Arizona in 1985 and acquired by Roche in 2008. The business now operates as Roche Tissue Diagnostics and remains centered on automated slide staining systems, immunohistochemistry and in situ hybridization assays, companion diagnostics, digital pathology scanners, and pathology workflow software. Ventana's products are used in anatomic pathology laboratories to support cancer diagnosis, biomarker testing, and treatment selection, including personalized oncology care. The company is best known for the VENTANA brand of integrated pathology instruments and assays and for its strong position in tissue-based diagnostics. As part of Roche Diagnostics, it is an active commercial diagnostics organization rather than a therapeutic drug developer.