Table 1.

Timeline of Project Milestones

Date	Project Milestones
July 15, 2020	A nationwide shortage of rapid SARS-CoV-2 diagnostic test kits and supplies prompted hospital administration to limit rapid tests to priority groups whose clinical care would most benefit from receiving test results within a few hours.
July 17, 2020	SARS-CoV-2 diagnostic test orders were updated with electronic clinical decision support via computerized physician order entry responses that automatically mapped priority groups to rapid testing based on reason for testing.
July 17, 2020	A COVID-19 test utilization dashboard was created for monitoring, analyzing, and informing diagnostic test stewardship.
September 2020	There was an extreme shortage of rapid testing reagents. Dashboard analysis revealed many routine test orders were performed as rapid, prompting investigation of inappropriate utilization.
October 4-17, 2020	Designated preintervention period (baseline)
October 18-31, 2020	Designated intervention period During this period, the following interventions were made to preserve a severely limited supply of rapid diagnostic tests: 1. An email reminder to ordering providers to follow authorized hospital guidelines for rapid testing 2. Discussions between laboratory and clinical leadership regarding rapid testing practices 3. Verbal messaging to frontline providers in team huddles 4. Discontinuation of manually placed stat stickers on specimen bags 5. In-service for microbiology laboratory staff to conform with priority status on specimen label
November 1-14, 2020	Designated postintervention period

COVID-19, coronavirus disease 2019; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.