Quest Diagnostics has reached a definitive agreement to acquire Haystack Oncology, an early-stage oncology company.

Established in 2021, Haystack provides a minimal residual disease (MRD)-testing solution to support the early and precise detection of residual or recurring cancer.

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

The test uses circulating tumour DNA (ctDNA)-based technology for the detection of MRD.

Haystack CEO and president Dan Edelstein said: “Combining Haystack with Quest is a major step forward in translating two decades of world-class liquid biopsy research and development into clinical laboratory services that are highly reliable and broadly accessible.”

Published in the New England Journal of Medicine in June last year, a multi-centre study showed the ability of an earlier version of the Haystack technology to identify patients with residual disease for adjuvant chemotherapy following surgery for stage II colon cancer.

Upon completion of the acquisition, Quest will explore utilising the Haystack MRD test as the foundation for new clinical lab services.

GlobalData Strategic Intelligence

US Tariffs are shifting - will you react or anticipate?

Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis.

By GlobalData

The transaction will combine Quest’s expertise and scale in the fields of oncology, genomics and pathology with Haystack’s highly sensitive MRD detection technology.

Quest Diagnostics chairman, CEO and president Jim Davis said: “Haystack’s liquid biopsy technology combined with Quest’s strengths in screening, pathology and sequencing will now position us to lead in the fast-growing MRD category.”

Subject to customary regulatory review, the deal is anticipated to close in the second quarter of this year.

Medical Device Network Excellence Awards - Nominations Closed

Nominations are now closed for the Medical Device Network Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact

Excellence in Action
HemoSonics has won the 2025 Marketing Award for its impactful promotion of theQuantra Hemostasis System and leadership in blood management education. See how targeted campaigns, thought leadership content, and hands on clinician training are accelerating Quantra’s market traction and shaping the future of hemostasis testing.

Discover the Impact