Quest Diagnostics Incorporated
(NYSE: DGX)

Quest Diagnostics Incorporated (Quest Diagnostics) is a provider of diagnostic testing, information and services, providing insights that enable patients and physicians to make healthcare decisions. Quest Diagnostics offers United States patients and physicians the access to diagnostic testing services through its nationwide network of laboratories and Company-owned patient service centers. The Company provides interpretive consultation through the medical and scientific staff. The Company is a provider of clinical testing, including gene-based and esoteric testing and anatomic pathology services, and the provider of risk assessment services for the life insurance industry. The Company also is a provider of testing for clinical trials and testing for drugs of abuse. In April 2014, the Company announced the acquisition of Summit Health. Combined business will be referred to as Quest Diagnostics Health and Wellness Services.

182.409 -

-0.331 (-0.18%)
Range 181.695 - 183.970   (1.25%)
Open 182.025
Previous Close 182.740
Bid Price 182.390
Bid Volume 13
Ask Price 182.460
Ask Volume 15
Volume 379,538
Value 44,837,889
Remark -
Delayed prices. Updated at 30 Jan 2026 04:50.
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About Quest Diagnostics

Quest Diagnostics Incorporated (Quest Diagnostics) is a provider of diagnostic testing, information and services, providing insights that enable patients and physicians to make healthcare decisions. Quest Diagnostics offers United States patients and physicians the access to diagnostic testing services through its nationwide network of laboratories and Company-owned patient service centers. The Company provides interpretive consultation through the medical and scientific staff. The Company is a provider of clinical testing, including gene-based and esoteric testing and anatomic pathology services, and the provider of risk assessment services for the life insurance industry. The Company also is a provider of testing for clinical trials and testing for drugs of abuse. In April 2014, the Company announced the acquisition of Summit Health. Combined business will be referred to as Quest Diagnostics Health and Wellness Services.

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