Attached files

file filename
EX-99.7 - EX-99.7 - QUEST DIAGNOSTICS INCdgx12312020ex997.htm
EX-32.2 - EX-32.2 - QUEST DIAGNOSTICS INCdgx12312020ex322.htm
EX-31.2 - EX-31.2 - QUEST DIAGNOSTICS INCdgx12312020ex312.htm
EX-31.1 - EX-31.1 - QUEST DIAGNOSTICS INCdgx12312020ex311.htm
EX-23.1 - EX-23.1 - QUEST DIAGNOSTICS INCdgx12312020ex231.htm
EX-21.1 - EX-21.1 - QUEST DIAGNOSTICS INCdgx12312020ex211.htm
EX-10.17 - EX-10.17 - QUEST DIAGNOSTICS INCdgx12312020ex1017.htm
EX-10.15 - EX-10.15 - QUEST DIAGNOSTICS INCdgx12312020exh1015.htm
EX-10.5 - EX-10.5 - QUEST DIAGNOSTICS INCdgx12312020ex105.htm
EX-10.4 - EX-10.4 - QUEST DIAGNOSTICS INCdgx12312020ex104.htm
10-K - 10-K - QUEST DIAGNOSTICS INCdgx-20201231.htm

Exhibit 32.1
CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. § 1350,
AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. § 1350, the undersigned certifies that, to the best of my knowledge, the Annual Report on Form 10-K for the period ended December 31, 2020 of Quest Diagnostics Incorporated, as being filed with the Securities and Exchange Commission concurrently herewith, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. § 78m or 78o(d)) and that the information contained in the Annual Report fairly presents, in all material respects, the financial condition and results of operations of Quest Diagnostics Incorporated.
Dated:February 22, 2021/s/ Stephen H. Rusckowski
Stephen H. Rusckowski
Chairman, Chief Executive Office and
President