Traffic lights have three colors and so does an infectious disease test made by AdvanDx.
The Woburn, Mass.-based molecular diagnostics developer launched its "Traffic Light PNA FISH" test in the European Union.
The tri-color test employs "fluorescence in situ hybridization" using "peptide nucleic acid" probes, hence PNA FISH, to simultaneously determine whether an individual’s blood has the presence of gram-negative E. coli, K. pneumoniae and P. aeruginosa microbes, all of which are very dangerous if left unchecked.