This story was updated on November 5, 2020 to include comment from Dr. Jonathan Heidt. When MU Health Care closed one of its two drive-thru coronavirus testing sites in mid-September, it pointed to a drop in the number of people getting tested. At that point, drive thru testing appointments had fallen by more than 1,000 from the peak of nearly 3,200 at the end of August. Since then, appointments have fallen further, dropping to just 1,500 the week of October 19. Dr. Jonathan Heidt is the vice chair of operations for emergency medicine at MU Health Care and oversees the system's coronavirus testing. He says demand has fluctuated, increasing in the summer, and spiked at the end of August, as university students returned for classes. Since then demand has tailed off, and Heidt says that's worrying, especially with the positivity rate increasing. "We really should be doing more testing to find those cases and intervene on them," Heidt said.