When you reach for a COVID-19 test, it’s probably because you’ve got a scratchy throat, runny nose, or cough. But those are far from the only symptoms that make Dr. Rohit Jain, an internal medicine doctor at PennState Health, suspect the virus. These days, when someone complains of nausea, diarrhea, or vomiting, “I always get a COVID test on that patient,” Jain says. [time-brightcove not-tgx=”true”] Why?