Did I Have It? This is the question many of us are asking. As our society adapts to living in a world with Sars-CoV-2, the virus responsible for the COVID-19 illness, efforts have turned to not only testing to see if someone is currently infected, but also testing that can help us determine if someone has had the infection in the past. This has the potential to open the doors for safely reintegrating people into normal society without the risk of transmitting the virus. Here is what you need to know about this testing, including some potential problems. What is