Myongji Hospital opens rapid Covid-19 PCR test center As the nation confirms more than 200,000 Covid-19 infections per day, Myongji Hospital has opened a rapid polymerase chain reaction (PCR) test center. According to the hospital, the test center, which started operation on Wednesday, will be open all year round from 8:30 a.m. to 10:00 p.m. from Monday through Saturday and until 6:00 p.m. on Su..