Who owns Haystack Oncology?
Haystack Oncology is owned by Quest Diagnostics (the United States, NYSE: DGX), which has owned the brand since 2023.[1]
Evidence: Quest Diagnostics Incorporated Annual Report on Form 10-K filed 2026-02-26, SEC EDGAR, 26 February 2026. Verified from filings; last checked .
Key facts
- Current owner
- Quest Diagnostics Incorporated verified
- Owned since
- Owner HQ
- 🇺🇸 United States, Secaucus, New Jersey
- Origin
- 🇺🇸 United States
- Category
- Healthcare & pharma › Care providers › Labs & diagnostics
- Parent ticker
- NYSE: DGX
- Last verified
- · 1 sources
About Haystack Oncology
Haystack Oncology developed a highly sensitive test for minimal residual disease, detecting circulating tumour DNA shed by a solid tumour to show whether cancer has recurred. Quest Diagnostics acquired it in 2023, and in 2025 its Haystack MRD test received a breakthrough device designation from the US Food and Drug Administration for early stage colorectal cancer.
Ownership timeline of Haystack Oncology
- 2023 – present Quest Diagnostics [1] verified
Where Haystack Oncology sits in Quest Diagnostics
Controlling ownership as of . Brands grouped under the entity that owns them; large groups are collapsed.
Open the full Quest Diagnostics ownership tree →
See the full Quest Diagnostics brand portfolio (6) →
Other brands owned by Quest Diagnostics
Quest Diagnostics controls 6 brands on Brandtree, 5 of them in healthcare & pharma.
Also in healthcare & pharma
Other brands in labs & diagnostics, and who owns them
Quest Diagnostics has more brands in labs & diagnostics on Brandtree than any other owner: 5 of 13.
| Brand | Owner | Owner based in |
|---|---|---|
| Colilert | IDEXX | 🇺🇸 United States |
| Petrifilm | Neogen | 🇺🇸 United States |
| Labcorp | Labcorp | 🇺🇸 United States |
| IDEXX Reference Laboratories | IDEXX | 🇺🇸 United States |
| Quanti-Tray | IDEXX | 🇺🇸 United States |
| Reveal | Neogen | 🇺🇸 United States |
| Soleris | Neogen | 🇺🇸 United States |
| Labcorp OnDemand | Labcorp | 🇺🇸 United States |
About the owner: Quest Diagnostics
Quest Diagnostics is a publicly listed company headquartered in Secaucus, New Jersey, United States. Brandtree records 6 brands under its control, and it is listed as NYSE: DGX.
Quest Diagnostics is a United States provider of diagnostic information services, running clinical laboratories and patient service centres and testing for physicians, hospitals, employers and insurers. Its 10-K says its services are mostly delivered under the Quest Diagnostics name, with AmeriPath, Dermpath Diagnostics, ExamOne and Quanum as other brands, and in 2024 it extended into Canada by buying LifeLabs.
Quest Diagnostics: full profile, brands and acquisition history →
🇺🇸 Haystack Oncology and other American brands
Brandtree records a controlling owner for 2,399 brands that began in the United States. 461 of them (19%) are now controlled by a company headquartered in another country; Haystack Oncology is not one of them.
Frequently asked questions
Who is the parent company of Haystack Oncology?
The parent company of Haystack Oncology is Quest Diagnostics, a publicly listed company headquartered in the United States.
Is Haystack Oncology American?
Yes. Haystack Oncology originated in the United States and its owner, Quest Diagnostics, is also headquartered in the United States.
Since when has Quest Diagnostics owned Haystack Oncology?
Quest Diagnostics has owned Haystack Oncology since 2023.
Is Haystack Oncology still owned by Quest Diagnostics?
Yes. As of 14 October 2026, Haystack Oncology is still owned by Quest Diagnostics. The ownership record was last checked against primary sources on that date.
Sources (1) & corrections
Last verified . Every ownership fact above is backed by one of these primary documents. Numbers in brackets in the text refer to this list.
- [1] Quest Diagnostics Incorporated Annual Report on Form 10-K filed 2026-02-26 — SEC EDGAR, SEC Form 10-K, published 26 February 2026; retrieved 14 October 2026.
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