My understanding of "theranostics" is that it is meant to describe companion diagnostics - the basis of personalized medicine. In other words figuring out the right therapy based on some biomarker of the disease.
I assume you are not opposed to use of say KRAS testing before using anti-EGFR drugs? Or less well known, an example from conventional chemo - testing for ERCC1 to determine if platinum-based therapy is appropriate for NCSLC or colon cancer? This latter test was pioneered by Response Genetics (RGDX) - a microcap proponent of such testing.