Providers and public health officials hope that more COVID-19 testing will help contain spread of the disease. But efforts to get tests done faster and results quicker are hindered by how many tests can be quickly deployed and how accurate they prove to be.Three decentralized tests for SARS-CoV-2, the virus that causes COVID-19, have been granted Emergency Use Authorization from the U.S. Food and Drug Administration in the past 10 days. Decentralized molecular tests are meant to bring lab-quality test results while the patient is with the provider so that they can guide treatment decisions. These tests, and any accompanying equipment,...