Lab testing companies in the United States:Which are most popular?
Labcorp and Quest Diagnostics share the highest share of searches among lab testing companies in the United States, at 48.3% in September 2026. When we checked with ChatGPT and Google AI Overviews, Labcorp and Quest Diagnostics showed up in every answer. Labcorp was recommended most often, coming first in two out of three responses that gave a list.
LabcorpShare of searches 48.3%Mentioned in 4 of 4 AI answersPlace in AI recommendations 1st
Quest DiagnosticsShare of searches 48.3%Mentioned in 4 of 4 AI answersPlace in AI recommendations 2nd
Any Lab Test NowShare of searches 1.6%Mentioned in 0 of 4 AI answersPlace in AI recommendations –
Sonora QuestShare of searches 1.6%Mentioned in 0 of 4 AI answersPlace in AI recommendations –
Walk-In LabShare of searches 0.14%Mentioned in 0 of 4 AI answersPlace in AI recommendations –
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Top lab testing companies in ChatGPT and Google AI Overviews
In Brandwave's three ChatGPT questions and one Google AI Overview, Labcorp and Quest Diagnostics appeared every time. Labcorp was recommended most often, coming first in two out of three answers that gave a list. Quest Diagnostics was second. Any Lab Test Now, which ranked third in searches, was not mentioned at all.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- Labcorp4 of 4Named in 3 of 3 ChatGPT answersNamed in 1 of 1 Google answers
- Quest Diagnostics4 of 4Named in 3 of 3 ChatGPT answersNamed in 1 of 1 Google answers
- Any Lab Test Now0 of 4Named in 0 of 3 ChatGPT answersNamed in 0 of 1 Google answers
- Sonora Quest0 of 4Named in 0 of 3 ChatGPT answersNamed in 0 of 1 Google answers
- Walk-In Lab0 of 4Named in 0 of 3 ChatGPT answersNamed in 0 of 1 Google answers
Ulta Lab Tests0 of 4Named in 0 of 3 ChatGPT answersNamed in 0 of 1 Google answers
See every answer about lab testing companies
4 answers
Asked ChatGPT
“Where's the best place to get blood work done?”
Asked ChatGPT
“Which lab testing company is best for routine blood tests?”
Asked ChatGPT
“Where can I order my own blood tests online?”
Searched Google, AI Overview
“lab testing”
Searched Google, AI Overview
“lab test near me”
Google showed no AI Overview for this search.
Not named in any answer:
Brands are shown in the order each answer named them. The survey took place in United States on October 23, 2026.
Which lab testing companies do people search for most?
This chart shows how often people search Google for each lab testing company by name. Each line represents a brand's share of searches for all six lab testing companies we track, month by month, from searches in United States.
Share of searches by month for Labcorp, Quest Diagnostics. The figures are in the table below the chart.
View monthly share of searches table
| Month | Labcorp | Quest Diagnostics | Any Lab Test Now | Sonora Quest | Walk-In Lab | Ulta Lab Tests |
|---|---|---|---|---|---|---|
| Oct 2025 | 43.5% | 53.1% | 1.8% | 1.4% | 0.13% | 0.06% |
| Nov 2025 | 48.5% | 48.5% | 1.6% | 1.3% | 0.12% | 0.06% |
| Dec 2025 | 48.4% | 48.4% | 1.6% | 1.3% | 0.14% | 0.08% |
| Jan 2026 | 48.1% | 48.1% | 1.9% | 1.6% | 0.17% | 0.12% |
| Feb 2026 | 48.3% | 48.3% | 1.6% | 1.6% | 0.14% | 0.12% |
| Mar 2026 | 48.4% | 48.4% | 1.6% | 1.3% | 0.14% | 0.1% |
| Apr 2026 | 43.4% | 53.1% | 1.8% | 1.4% | 0.16% | 0.11% |
| May 2026 | 48.3% | 48.3% | 1.6% | 1.6% | 0.17% | 0.1% |
| Jun 2026 | 48.3% | 48.3% | 1.6% | 1.6% | 0.14% | 0.12% |
| Jul 2026 | 48.2% | 48.2% | 1.6% | 1.6% | 0.26% | 0.12% |
| Aug 2026 | 48.3% | 48.3% | 1.6% | 1.6% | 0.21% | 0.1% |
| Sep 2026 | 48.3% | 48.3% | 1.6% | 1.6% | 0.14% | 0.1% |
| Rank | Brand | Share of searches | Estimated monthly branded searches | vs prior month | Share change |
|---|---|---|---|---|---|
| 1, held 1st | 48.3% | 4.1M | 0% | 0 points | |
| 2, held 2nd | 48.3% | 4.1M | 0% | 0 points | |
| 3, held 3rd | 1.6% | 135K | 0% | 0 points | |
| 4, held 4th | 1.6% | 135K | 0% | 0 points | |
| 5, held 5th | 0.14% | 12.1K | -33.1% | -0.1 points | |
| 6, held 6th | 0.1% | 8.1K | 0% | 0 points |
1.
Labcorp48.3%
Held 1st. 4.1M estimated branded searches, 0% vs prior month. Share 0 points.
48.3%
Held 2nd. 4.1M estimated branded searches, 0% vs prior month. Share 0 points.
1.6%
Held 3rd. 135K estimated branded searches, 0% vs prior month. Share 0 points.
1.6%
Held 4th. 135K estimated branded searches, 0% vs prior month. Share 0 points.
0.14%
Held 5th. 12.1K estimated branded searches, -33.1% vs prior month. Share -0.1 points.
0.1%
Held 6th. 8.1K estimated branded searches, 0% vs prior month. Share 0 points.
Which brand is most popular in search among lab testing companies in the United States?
6 brands
Labcorp and Quest Diagnostics share the highest share of searches among lab testing companies in the United States, at 48.3% in September 2026.
| Brand | Share of searches | Peak | Low | Rank |
|---|---|---|---|---|
| Labcorp | 43.5% → 48.3% | 48.5%Nov 2025 | 43.4%Apr 2026 | 2nd → 1st |
| Quest Diagnostics | 53.1% → 48.3% | 53.1%Oct 2025 | 48.1%Jan 2026 | 1st → 2nd |
| Any Lab Test Now | 1.8% → 1.6% | 1.9%Jan 2026 | 1.6%Jul 2026 | 3rd |
| Sonora Quest | 1.4% → 1.6% | 1.6%Sep 2026 | 1.3%Dec 2025 | 4th |
| Walk-In Lab | 0.13% → 0.14% | 0.26%Jul 2026 | 0.12%Nov 2025 | 5th |
| Ulta Lab Tests | 0.06% → 0.1% | 0.12%Feb 2026 | 0.06%Oct 2025 | 6th |
Each finding as a sentence
- Across the 12 months ending September 2026, Labcorp’s share of searches among lab testing companies in the United States increased from 43.5% to 48.3%.
- 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, Labcorp’s share of searches among lab testing companies in the United States peaked at 48.5% in November 2025 and was lowest at 43.4% in April 2026.
- 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, Labcorp rose from 2nd to 1st among lab testing companies in the United States.
- Across the 12 months ending September 2026, Quest Diagnostics fell from 1st to 2nd among lab testing companies in the United States.
- Across the 12 months ending September 2026, Any Lab Test Now, Sonora Quest, Walk-In Lab and Ulta Lab Tests held steady: their share of searches among lab testing companies in the United States each moved less than 0.5 percentage points.
How did search popularity change for United States lab testing companies in September 2026?
3 changes
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.
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