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2021 CORPORATE RESPONSIBILITY REPORT I 73 SASB Sustainability Accounting Standards Index Quest Diagnostics has issued its first Sustainability Accounting Standards Board (SASB) Index for the period 2021. We are classified under SASB’s Health Care Delivery Industry Standard. In addition to reporting on metrics for that industry where applicable (see Tables 1 and 2), we are reporting on select metrics from other industry-specific SASB standards we believe are relevant to our operations (see Table 3). Our decision to disclose additional metrics is based on our assessment of ESG topics that matter to our investors and other stakeholders. ERM Certification and Verification Services (ERM CVS) conducted independent third-party assurance of year 2021 Scope 1 and 2 greenhouse gas emissions data. See the Independent Assurance Statement by ERM CVS here . SASB Code Metric Response Energy Management HC-DY-130a.1 (1) Total energy consumed (2) Percentage grid electricity (3) Percentage renewable (1) 2,476,076 gigajoules (2) 43.97% (3) 2.64% Waste Management HC-DY-150a.1 Total amount of medical waste, percentage (a) incinerated, (b) recycled or treated, and (c) landfilled In 2021, Quest had 10,860 metric tons of medical waste, all of which is treated. HC-DY-150a.2 Total amount of: (1) hazardous and (2) non-hazardous pharmaceutical waste, percentage (a) incinerated, (b) recycled or treated, and (c) landfilled In 2021, Quest did not produce pharmaceutical waste. Patient Privacy & Electronic Health Records HC-DY-230a.1 Percentage of patient records that are Electronic Health Records (EHR) that meet "meaningful use" requirements A ll Quest Diagnostics lab results can be utilized by lab customers in a way that meets the EHR meaningful use requirements. Quest Diagnostics EHR system is listed on the Certified Health IT Product List . HC-DY-230a.2 Description of policies and practices to secure customers’ protected health information (PHI) records and other personally identifiable information (PII) See 2021 Corporate Responsibility Report, pages 69 and 70. Table 1: Health Care Delivery Industry Standard Accounting Metrics TABLE OF CONTENTS 2021 OVERVIEW COVID-19 RESPONSE PROMOTING A HEALTHIER WORLD CREATING AN INSPIRING WORKPLACE BUILDING VALUE REFERENCES

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