Latest Quest Diagnostics News & Updates

See the latest news and media coverage for Quest. We track all announcements, press releases, and industry mentions in real time, all in one place.

Quest Diagnostics (Quest)

Medical diagnostic testing and laboratory services provider

questdiagnostics.com

Headquarters: Secaucus, United States
Founded year: 1967
Company type: Public company
Number of employees: 30,000+
Industry: Healthcare Facilities & Services

Last updated Today

Latest news about Quest Diagnostics (Quest)

In short: Quest achieved strong 2026 financial growth, raised its annual outlook, and expanded its diagnostics portfolio through new partnerships.

Company announcements

August 24 Quest

Quest Diagnostics launches new FDA-cleared blood test for Alzheimer's pathology assessment

The company adds Roche pTau217 to its AD-Detect portfolio and introduces a multi-biomarker lab-developed test with low indeterminate rates.

July 23 Quest

Quest reports Q2 2026 revenue up 10.2%, raises guidance

Second quarter diluted EPS rose to $2.84, and adjusted EPS to $3.12. Revenue reached $3.04 billion, with organic growth of 10%.

July 10 Quest

One in five workers had positive hair drug test in 2025

Hair test positivity for marijuana rose 58.9% over five years, while overall urine positivity stayed above 4%.

July 8 Quest

Quest extends oncology test access through OncoEMR MPI

A pilot program with American Oncology Network provides access to Haystack MRD and comprehensive genomic profiling.

Media coverage

August 25 Yahoo Finance

Quest Diagnostics Raises 2026 Outlook as Testing Demand Accelerates

DGX raised its 2026 outlook as testing demand surged, but lower-margin deals and rising project...

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