How COVID-19 test works: Know the basics
Gene-based PCR, or polymerase chain reaction, test is most reliable, but slow
1 of 12
2 of 12
3 of 12
4 of 12
5 of 12
6 of 12
7 of 12
8 of 12
9 of 12
10 of 12
11 of 12
12 of 12