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Quest Diagnostics on Thursday raised its full-year profit forecast, after demand for routine diagnostic testing helped the company beat second-quarter estimates. Shares of the New ‌Jersey-based company rose about 5% in premarket trading following the results. Demand for the company's diagnostic testing services was strong across its physician, hospital and consumer channels, Quest said. The results were "well above what ⁠was widely expected," Barclays analysts said.

Framing sexually transmitted infections (STIs) as a large-scale problem often obscured by percentages, Damian Alagia, III, MD, MS, MBA, FACS, Chief, Hospital and Health Systems, and Senior Medical Director, Advanced Diagnostics / Women's Health, Quest Diagnostics, argued that universal, non-judgmental testing is central to reaching reproductive-age women. Alagia said absolute figures convey the scale more effectively than rates, noting over 1.5 million patients annually with chlamydial infections, some 190,000 patients with syphilis, and nearly 4,000 babies with congenital syphilis, in 2024 data from the Centers for Disease Control and Prevention (CDC).

Nearly one in five American workers tested positive for drug use in long-term screenings last year, driven by a rise in cannabis consumption that is forcing companies to reevaluate their hiring practices. According to new data from Quest Diagnostics, 19.1 percent of workers screened via hair analysis in 2025 returned a positive result, representing a 46 percent increase from 2021. Marijuana accounted for 52.5 percent of those positive hair tests.

Quest is the largest reference laboratory to embed oncology molecular ordering into OncoEMR MPI, with projected reach to 4,700 clinicians across ~1,600 community oncology sites. Integration targets administrative friction from multi-biomarker orders and dense reports by reducing ordering steps, accelerating account setup, and returning more usable results inside routine EHR workflows.

The Quest Diagnostics Foundation said this week that it has awarded nearly $5 million in grant funding to four Miami-area non-profits to improve chronic and maternal health outcomes. With the funding, which was granted to the Florida International University Foundation, Urban Health Partnerships, The Health Council of South, and US Hunger, the Quest Diagnostics Foundation aims to expand healthcare access in the area, including through no-cost lab testing.