Since 2005, Zeptosens AG has operated as a subsidiary of Bayer Technology Services GmbH.Zeptosens AG provides microarray platforms for sensitive and quantitative protein profiling, and signaling pathway analysis by reverse protein arrays. Its products include ZeptoREADER, a microarray reader for Zeptosens planar wave guide technology; ZeptoMARK protein microarray chips and ZeptoCARRIER for various data points, which are split into arrays; ZeptoFOG, a chip blocking station for uniform blocking of chips; ZeptoMARK reverse array reagents, such as lysis, spotting, blocking, and assay buffers; and image and data analysis software. The company also offers proteinarray services, including protein profiling for various samples, such as cell lines, tissues, microdissected cells, and depleted serums; and assay development. In addition, it provides training services, technical and applications support, and technical service and maintenance. The company's products are used in various applications, including biomarker/target discovery and validation, cell-based screening, mode of action profiling, selectivity profiling, and toxicology investigation. Its customers include pharma research and development companies, biotech companies, academic institutions, government organizations, hospitals, and contract research organizations.