2021 CORPORATE RESPONSIBILITY REPORT I 75 SASB Code Metric Response HC-DY-260a.2 Percentage of controlled substance prescriptions written for which a prescription drug monitoring program (PDMP) database was queried Not applicable – Quest Diagnostics does not issue prescriptions for controlled substances. HC-DY-270a.1 Description of policies or initiatives to ensure that patients are adequately informed about price before undergoing a procedure Quest Diagnostics aims to be as transparent as possible about the pricing of its services. Pricing is publicly available online for all tests (currently approximately 50) offered by QuestDirect ® , our consumer-facing offering that enables individuals to select and purchase laboratory testing from Quest Diagnostics. Many patients who use Quest Diagnostics patient service centers for testing can take advantage of our Real Time Estimation initiative to understand the cost of their lab tests before they are tested (not available for all patients). HC-DY-270a.2 Discussion of how pricing information for services is made publicly available See response to HC-DY-270a.1. HC-DY-270a.3 Number of the entity’s 25 most common services for which pricing is publicly available, percentage of total services performed (by volume) that these represent The tests (currently approximately 50) offered by QuestDirect, our consumer-facing offering that enables individuals to select and purchase laboratory testing from Quest Diagnostics, represent less than 5% by volume of our total services. Employee Health & Safety HC-DY-320a.1 (1) Total recordable incident rate (TRIR) and (2) days away, restricted, or transferred (DART) rate (1) 2.07 (2) 0.56 Employee Recruitment, Development & Retention HC-DY-330a.1 (1) Voluntary and (2) involuntary turnover rate for: (a) physicians, (b) non-physician health care practitioners, and (c) all other employees Voluntary Turnover Rate (%) Involuntary Turnover Rate (%) Physicians 10.9% Not disclosed Non-physician health care practitioners Not applicable Not applicable All other employees 24.2% Not disclosed HC-DY-330a.2 Description of talent recruitment and retention efforts for healthcare practitioners See 2021 Corporate Responsibility Report, page 52. Table 1: Health Care Delivery Industry Standard Accounting Metrics (Continued) TABLE OF CONTENTS 2021 OVERVIEW COVID-19 RESPONSE PROMOTING A HEALTHIER WORLD CREATING AN INSPIRING WORKPLACE BUILDING VALUE REFERENCES