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Samples—and a certain stink—are accumulating at Quest Diagnostics thanks to the cyclosporiasis outbreak. On a laboratory table that normally sits empty, hundreds of feces samples are arranged in stacks six vials high. They’ve traveled by ground and plane, across seven different eastern U.S. states, for one purpose: to be tested for parasites, including cyclospora. And they’re coming faster than scientists here can test them. At Quest’s Clifton lab, workers are putting in extra hours.

Women with vaginosis are around three times as likely to also test positive for gonorrhea, chlamydia or other bacterial sexually transmitted infections, a new study says. The study results confirm guidance from the U.S. Centers for Disease Control and Prevention that women being treated for bacterial vaginosis should be tested for STIs, which can present with similar symptoms, researchers said in the journal O&G Open. "STIs can lead to serious reproductive and other health complications when left undetected and untreated,” senior researcher Dr. Damian Alagia said in a news release.

Quest Diagnostics president and CEO Jim Davis discusses how his company is implementing AI to help its patients on 'The Claman Countdown.'

As the liquid biopsy space has exploded in recent years, clinical laboratories are struggling to find sufficient staff to oversee and run these assays. "The problem is real," agreed Thomas Koch, senior VP and global head of research and development at Quest Diagnostics, adding that liquid biopsy "is a very fast-growing field with many players." Beyond the rise in demand for testing, test complexity has also contributed to the workforce shortage. Liquid biopsy tests often feature workflows involving dozens of steps along with sophisticated chemistries, hardware, software, and data analysis tools. "It's an entire ecosystem that is a little different from the standard clinical laboratory where you do, say, a calcium test, and then report it out," said Quest's Koch.

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.

Quest Diagnostics said Wednesday that its Haystack MRD test has received approval from the New York State Department of Health's Clinical Laboratory Evaluation Program (CLEP) for use in identifying residual or recurring disease in patients with a range of solid tumors. With the approval, Haystack MRD is now available for patient testing in all 50 states and the District of Columbia. Quest launched the circulating tumor DNA liquid biopsy test in late 2024.