The most common method of testing for infection in medical facilities is currently a strip that turns a certain color when infected fluids come into contact with it.
“The problem with this method is that it’s imprecise,” Gorski said. “The human eye is forced to judge the level of infection based on the hue and deepness of a color. It’s difficult to make an accurate call based on that.” Furthermore, roughly a third of samples cannot be tested because the fluids contain blood or are too opaque.
Other methods include microbiology or examining body fluid samples under a microscope and counting white blood cells, also known as leukocytes, which are an indicator of an infection. However, these can be slow processes and require more highly trained personnel.