On the Record · Quest Diagnostics
Quest Diagnostics competitors, on the record
The companies Quest Diagnostics names as competitors in its annual reports, 2023 to 2025, and the companies that name Quest Diagnostics, each with the sentence and the filing.
Who Quest Diagnostics names
| Company | Named in |
|---|---|
| Laboratory Corporation of America Holdings, Inc. | 2025 |
In its own words
Laboratory Corporation of America Holdings, Inc.
Word for word“Our largest commercial clinical laboratory competitor is Laboratory Corporation of America Holdings, Inc.” 10-K for 2025
Who names Quest Diagnostics
Companies whose own annual reports name Quest Diagnostics as a competitor.
Word for word“We face competition from a variety of sources, including Ambry Genetics (owned by Tempus AI); Myriad Genetics, Inc.; Natera; Color Health, Inc.; GeneDx; Illumina; Variantyx; 3billion; a few large, established general testing companies such as Laboratory Corporation of America Holdings (LabCorp) and Quest Diagnostics Incorporated; and clinical laboratories in an academic or healthcare provider setting that perform clinical genetic testing on behalf of their affiliated institutions.” 10-K for 2025
Word for word“Our competitors in the NIPT space include BGI; BillionToOne Inc.; Fulgent Genetics; Illumina, through its subsidiary Verinata; Laboratory Corporation of America Holdings, or Labcorp; Myriad Genetics, Inc.; Quest Diagnostics Incorporated, or Quest; and Revvity Inc.” 10-K for 2025
Read from Quest Diagnostics’s annual reports (10-K for 2025, 10-K for 2024, 10-K for 2023) and the financial data it files with the SEC, as of 2026-02-26. Every quotation is word for word from the filing linked beside it; how these pages are built and checked. The full record is in its company data sheet.