accurate quantification of biomolecules down to the zeptomole range (10E–21 moles), therefore potentially allowing the detection of less than a thousand individual molecules. In addition to supporting in vitro and in vivo diagnostics, Z–TECTTM can also serve as a novel platform for the targeted delivery of a high payload of radio-or chemo-therapeutic drugs for cancer treatment. Potentially enabling far safer and more efficacious targeted delivery therapies, Z–TECTTM could also have a major impact on the emerging field of “Theranostics”, which simultaneously combines diagnostics and therapy.