As it's easy and cheap, you have no reason to use a measurement in isolation. For instance, you can track it every day to see if the infection is growing or shr

As it's easy and cheap, you have no reason to use a measurement in isolation. For instance, you can track it every day to see if the infection is growing or shrinking. Here's a recent example regarding COVID-19: "We realized that whereas a single CRP lab value from hospital admission wasn't very practical as a predictor of who might get sicker, tracking the rate of change from Day 1 to Day 2 or 3 was a very powerful and very clinically predictive test" https://www.sciencedaily.com/releases/2020/11/201105112947.htm https://www.sciencedaily.com/releases/2020/11/201105112947.h...