Dan Haemmerle, Executive Director Investor Relations
973-520-2900
Investor@QuestDiagnostics.com

Transfer Agent
Shareholders who need information on shareholder accounts, stock transfers or other shareholder service matters can contact our transfer agent, Computershare:

Computershare
P.O. Box 43078
Providence, RI 02940
Telephone number: 800-622-6757 (US, Canada, Puerto Rico)
781-575-4735 (all other locations)
Internet inquiries: Investor Centre website at www.computershare.com/investor
Address changes should be reported to Computershare.

Board of Directors
Under the Company’s Corporate Governance Guidelines, our Chairman of the Board is the principal contact for communications with our Board of Directors. Shareholders and other interested parties may communicate with the Chairman of the Board or any other director by addressing their correspondence to the Board member or members at:

c/o the Corporate Secretary's Office
Quest Diagnostics Incorporated
3 Giralda Farms
Madison, NJ 07940
Or via email at: ChairmanoftheBoard@QuestDiagnostics.com

Under the procedures approved by the Board’s independent directors, communications are distributed to the appropriate director or directors depending on the communication. The Board of Directors has requested that the Office of the Corporate Secretary shall not route any, and shall not retain, any communications unrelated to the duties and responsibilities of the Board of Directors, including without limitation:

• Spam
• Junk mail and mass mailings
• Product inquiries and suggestions
• Resumes and other forms of job inquiries
• Surveys
• Business solicitations or advertisements

Proposals submitted by shareholders for inclusion in the Company’s annual proxy statement; proposals submitted by shareholders for presentation at the Company’s annual shareholders meeting but not for inclusion in the Company’s proxy statement; and related communications shall be handled by the Company’s Secretary, even if addressed to a director or directors.