Coronavirus antibody testing is suddenly everywhere, but results are often incorrect or inconclusive. Patrick Hsu, an assistant professor of bioengineering at the University of California, Berkeley, was a senior author on a recent study on the accuracy of antibody tests. His group analyzed 14 tests and found only three produced consistently reliable results. "People want answers: Am I immune? Can I go back to work? Can I play soccer in the park?" Hsu says. "But the story's not quite so simple." He says that even for tests that can accurately detect the virus, many questions remain. For more on this, see our press release at Berkeley News