Optum vs Quest Diagnostics
Optum (optum.com) and Quest Diagnostics (questdiagnostics.com) are stores in related niches (Medical Services and Health) in the AdLibrarySpy index. Quest Diagnostics gets more monthly visits than Optum: about 16M vs 5.9M.
The facts we hold on both, side by side. Checked October 31, 2026.
In short
- Quest Diagnostics gets more monthly visits than Optum: about 16M vs 5.9M.
- Optum runs more live Meta ads than Quest Diagnostics: 185 vs 2.
- Optum advertised on more days in the past 12 months: 34 vs 5.
| Fact | Optum |  Quest Diagnostics |
|---|---|---|
| Monthly visits (SimilarWeb) | 5.9M (Sep 2026) | 16M (Sep 2026) |
| Live Meta ads | 185 | 2 |
| Store created | Dec 2016 | Dec 2016 |
| Based in | United States | United States |
| Niche | Medical Services | Health |
Questions shoppers ask
- What is the difference between Optum and Quest Diagnostics?
- Quest Diagnostics gets more monthly visits than Optum: about 16M vs 5.9M. Optum runs more live Meta ads than Quest Diagnostics: 185 vs 2. Optum advertised on more days in the past 12 months: 34 vs 5.
- Do Optum and Quest Diagnostics sell the same things?
- Both are listed in related niches: Optum in Medical Services, Quest Diagnostics in Health.
Facts from the Meta Ad Library, SimilarWeb, Trustpilot and each store; a fact only one of them has is left out. Is Optum legit? · Is Quest Diagnostics legit?