This protocol details recommendations for collecting and processing saliva for SARS-CoV-2 detection, as used in Wyllie et al. 2020, which details results of testing saliva collected from COVID-19+ inpatients and asymptomatic healthcare workers.COVID-19 inpatients. Saliva samples were self-collected by the patient. Upon waking, patients were asked to avoid food, water and brushing of teeth until the sample was collected. Patients were asked to repeatedly spit into a sterile 90 mL specimen collection cup until roughly a quarter full of liquid (excluding bubbles), before securely closing it. For patients unable to provide saliva (such as those on mechanical ventilation), clinical teams were advised that suction could be used to collect saliva into the cup (or a sputum trap container for improved containment and safety). Collected volumes ranged from 0.5 - 20 mL. All saliva samples were stored at room temperature and transported to the research lab at the Yale School of Public Health within 5 hours of collection, with RNA for SARS-CoV-2 detection extracted within 12 hours of collection. When possible, saliva samples were stored at +4\u00b0C, otherwise they were kept at room temperature.Asymptomatic healthcare workers. Asymptomatic healthcare workers were asked to collect ~10 mL of saliva into a sterile specimen collection cup. No specific instructions were given regarding food intake etc prior to collection. Samples were delivered to the research lab at the Yale School of Public Health within 6 hours of collection and stored for up to 6 hours at +4\u00b0C until aliquoting for RNA extraction. Samples collected on overnight shifts were stored at +4\u00b0C before delivery to the research lab.