If you need a Covid-19 test, you have options. But what type of test is best? And what are the differences? Terms like molecular, antigen, rapid, PCR, RNA can be head-spinning when you often just want to know the answer to one question: positive or negative?

The differences in tests pertain to what they are looking for, how sensitive they are, as well as how fast they produce results and how much they cost.

This video explains how Covid-19 tests are administered, how they work to detect disease, and the advantages and disadvantages of each.