--- title: "Quest Diagnostics: search popularity in the United States" description: "Quest Diagnostics runs lab testing and patient service centers. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time." canonical: "https://gobrandwave.com/demand/us/brands/quest-diagnostics" publisher: "Brandwave" --- # Quest Diagnostics: search popularity in the United States Quest Diagnostics runs lab testing and patient service centers. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time. ## Key facts - **Brand**: Quest Diagnostics - **Market**: United States - **Measured month**: Sep 2026 - **Share of Search among lab testing companies**: 48.3% ## Where the brand sits | Competitive set | Rank | Share of Search | Estimated monthly branded searches | | --- | --- | --- | --- | | Lab testing companies | 2 | 48.3% | 4.1M | - [Lab testing companies in the US](/demand/us/categories/us-lab-testing-companies) ## Top lab testing companies in ChatGPT and Google AI Overviews In three ChatGPT questions and one Google AI Overview, Quest Diagnostics appeared in all four answers. Quest Diagnostics is the second most recommended of the six. Brands get a higher AI rank if they are mentioned earlier in the answers that list options. | Brand | AI rank | ChatGPT answers that named it | Google AI Overviews that named it | All answers that named it | | --- | --- | --- | --- | --- | | Labcorp | 1st | 3 of 3 | 1 of 1 | 4 of 4 | | Quest Diagnostics | 2nd | 3 of 3 | 1 of 1 | 4 of 4 | | Any Lab Test Now | Not ranked | 0 of 3 | 0 of 1 | 0 of 4 | | Sonora Quest | Not ranked | 0 of 3 | 0 of 1 | 0 of 4 | | Walk-In Lab | Not ranked | 0 of 3 | 0 of 1 | 0 of 4 | | Ulta Lab Tests | Not ranked | 0 of 3 | 0 of 1 | 0 of 4 | ## Every AI answer about lab testing companies - Asked ChatGPT "Where's the best place to get blood work done?": 1. Labcorp, 2. Quest Diagnostics - Asked ChatGPT "Which lab testing company is best for routine blood tests?": 1. Quest Diagnostics, 2. Labcorp - Asked ChatGPT "Where can I order my own blood tests online?": 1. Labcorp, 2. Quest Diagnostics - Searched Google, AI Overview "lab testing": 1. Labcorp, 2. Quest Diagnostics Not named in any answer: Any Lab Test Now, Sonora Quest, Walk-In Lab and Ulta Lab Tests. Brands are listed in the order each answer named them. The answers were collected in United States on October 23, 2026. ## How has branded search demand for Quest Diagnostics changed in the United States over the last 12 months? - Across the 12 months ending September 2026, estimated monthly branded searches for Quest Diagnostics in the United States fell from 5M to 4.1M. - Across the 12 months ending September 2026, Quest Diagnostics’ share of searches among lab testing companies in the United States decreased from 53.1% to 48.3%. - Across the 12 months ending September 2026, Quest Diagnostics’ share of searches among lab testing companies in the United States peaked at 53.1% in October 2025 and was lowest at 48.1% in January 2026. - Across the 12 months ending September 2026, Quest Diagnostics fell from 1st to 2nd among lab testing companies in the United States. ## How did search popularity change for United States lab testing companies in September 2026? - Estimated monthly branded searches for Ulta Lab Tests in the United States rose 50% over 12 measured months, from 5.4K to 8.1K in September 2026. - Estimated monthly branded searches for Quest Diagnostics in the United States fell 18.2% over 12 measured months, from 5M to 4.1M in September 2026. - Estimated monthly branded searches for Any Lab Test Now in the United States fell 18.2% over 12 measured months, from 165K to 135K in September 2026. ## Historical estimated branded-search demand | Month | Competitive set | Estimated monthly branded searches | Share of Search | Rank | | --- | --- | --- | --- | --- | | Oct 2025 | Lab testing companies | 5M | 53.1% | 1 | | Nov 2025 | Lab testing companies | 4.1M | 48.5% | 2 | | Dec 2025 | Lab testing companies | 4.1M | 48.4% | 2 | | Jan 2026 | Lab testing companies | 4.1M | 48.1% | 2 | | Feb 2026 | Lab testing companies | 4.1M | 48.3% | 2 | | Mar 2026 | Lab testing companies | 5M | 48.4% | 2 | | Apr 2026 | Lab testing companies | 5M | 53.1% | 1 | | May 2026 | Lab testing companies | 4.1M | 48.3% | 2 | | Jun 2026 | Lab testing companies | 4.1M | 48.3% | 2 | | Jul 2026 | Lab testing companies | 4.1M | 48.2% | 2 | | Aug 2026 | Lab testing companies | 4.1M | 48.3% | 2 | | Sep 2026 | Lab testing companies | 4.1M | 48.3% | 2 | ## How are Quest Diagnostics’ branded searches counted? Brandwave collects information about searches that people make online using Quest Diagnostics’ name. When viewed over time, estimated search volumes for this branded term can be used to understand whether interest in the brand is growing, holding steady, or fading. - “quest diagnostics” ## Which lab testing companies compete with Quest Diagnostics? - [Labcorp](/demand/us/brands/labcorp): Head-to-head: /demand/us/compare/labcorp-vs-quest-diagnostics - [Any Lab Test Now](/demand/us/brands/any-lab-test-now): Head-to-head: /demand/us/compare/any-lab-test-now-vs-quest-diagnostics - [Sonora Quest](/demand/us/brands/sonora-quest): Head-to-head: /demand/us/compare/quest-diagnostics-vs-sonora-quest - [Walk-In Lab](/demand/us/brands/walk-in-lab): Head-to-head: /demand/us/compare/quest-diagnostics-vs-walk-in-lab - [Ulta Lab Tests](/demand/us/brands/ulta-lab-tests): Head-to-head: /demand/us/compare/quest-diagnostics-vs-ulta-lab-tests ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Cite this page Brandwave. "Quest Diagnostics: search popularity in the United States". https://gobrandwave.com/demand/us/brands/quest-diagnostics This page is also available as HTML at https://gobrandwave.com/demand/us/brands/quest-diagnostics. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.