That's a PCR test, for active infection. That's not the same thing as the parent comment is talking about. Antibody is a blood test for (potentially) detecting

That's a PCR test, for active infection. That's not the same thing as the parent comment is talking about. Antibody is a blood test for (potentially) detecting past infection. Its public health benefits are lower and is usually not offered in a drive-through format. But it is available free with prescription, besides being included in blood donations.