Flusens ApS was spun-out from the Technical University of Denmark in 2014 with a focus on development of diagnostics for influenza virus infections.

In order to emphasize the much wider testing applicability of the Company’s AptaSystem® technology, the company name was changed to Solsten (“sunstone”). According to medieval legends, a sunstone could be used as a simple, yet mobile and advanced navigational instrument, which could locate the sun in a completely overcast sky, and thereby facilitate fast and pivotal decisions.