Lack of COVID-19 testing in St. Louis County could affect its positivity rate In St. Louis County, it's gone from an average of 260 tests conducted at the health department in November to 37 tests per day in April Author: Justina Coronel (KSDK) Updated: 7:00 PM CDT April 28, 2021 ST. LOUIS COUNTY, Mo. — There's been a persistent drop in testing for COVID-19 and the trend is happening across the St. Louis area. "We have seen a decline in testing for Lincoln County overall," a spokesperson for the Lincoln County Health Department said. "The current daily averages for total tests are 62 (PCR) and 50 (Antigen)." 5 On Your Side spoke to the Chief Medical Officer at Total Access Urgent Care Dr. Troy Dinkel, who said they've seen a drop-off, too.