This interview with Dr Curtis Nickel from Queen's University in Canada gives us something to think about when it comes to UTI testing:
https://soundcloud.com/talking-urology/usanz-2017-interviews-dr-curtis-nickel
"We make our clinical decisions in infectious disease in urology based on technology that’s over 100-years-old. We’re still taking urine samples, plating it on an AGAR, and putting it in 24 hours in an incubator and then making a decision. We now know that we grow less than one percent of potential uropathogens by this technique; we don’t culture biofilm bacteria; and we miss 99.9 precent of possible microorganisms that are in the environment that might be related to infectious disease.”