Every brand Quest Diagnostics owns
6 brands, sorted alphabetically. Brands with their own page link through; others are listed here with their source. See the company profile and ownership tree.
| Brand | Category | Origin | Held via | Stake | Since | Confidence | Source |
|---|---|---|---|---|---|---|---|
| AmeriPath | Labs & diagnostics | 🇺🇸 United States | Direct | 100% | — | verified | SEC EDGAR, Feb 2026 |
| Dermpath Diagnostics | Labs & diagnostics | 🇺🇸 United States | Direct | 100% | — | verified | SEC EDGAR, Feb 2026 |
| ExamOne | Labs & diagnostics | 🇺🇸 United States | Direct | 100% | — | verified | SEC EDGAR, Feb 2026 |
| Haystack Oncology | Labs & diagnostics | 🇺🇸 United States | Direct | 100% | 2023 | verified | SEC EDGAR, Feb 2026 |
| LifeLabs | Labs & diagnostics | 🇨🇦 Canada | Direct | 100% | 2024 | verified | SEC EDGAR, Feb 2026 |
| Quanum | Enterprise software | 🇺🇸 United States | Direct | 100% | — | verified | SEC EDGAR, Feb 2026 |