Dataset size
The latest Medical Tests run found 25 recommended brands and 33 cited sources in AI answers.
Medical Tests
This weekly AI Brand Index shows how AI tools answer buyer questions in the Medical Tests category. SupaIntent asks each LLM the same question: which brands are the most visible, significant, and recommended in that niche. Each system returns its own top. We track what brands are recommended, which cited sources are used and how positions move week to week. Use it to see the freshest AI visibility data for this category.
Updated 9 August 2026
Brands
Category coverage
25
ranked across AI engines
Sources
Evidence base
33
domains cited in answers
Brand sites
Official share
49%
from brand-owned domains
AI model filter
Position history
Position history chart for the top brands in this AI Brand Index category. Lower rank numbers mean stronger visibility.
| Brand | Latest rank |
|---|---|
| Labcorp | 1 |
| LetsGetChecked | 2 |
| Quest Diagnostics | 3 |
| Everlywell | 4 |
| HealthLabs | 5 |
What AI tools say about Medical Tests
Movement
What changed this week?
Labcorp held the top position, but the ranking below it moved sharply: Walk-In Lab entered the top 10 this week, while Abbott, Roche Diagnostics and Siemens Healthineers dropped at least three positions.
Sources
Which sources shape AI answers?
No single publisher dominates. The most cited sources are Reddit, Topconsumerreviews and Healthline, which means the citation field is open.
Engines
Do AI engines agree on the leader?
The engines disagree on the leader. ChatGPT and Google AI Mode both name Quest Diagnostics first, Gemini names Labcorp OnDemand, and Perplexity names Thermo Fisher Scientific.
Citation-ready
Key facts from this AI Brand Index report
Current leader
Labcorp ranks #1 for Medical Tests in the latest SupaIntent AI Brand Index run.
Top brands
Labcorp, LetsGetChecked, and Quest Diagnostics lead Medical Tests across AI answers from ChatGPT, Google AI Mode, Gemini and Perplexity.
Brand sites
Reddit, Topconsumerreviews, and Healthline are the most cited brand sites in this category.
Weekly movement
Top 10 onlyEntered the index
New in the top 10
Walk-In Lab#6
Biggest gains
Moved up this week
DirectLabs10 to #7
Ulta Lab Tests9 to #9
HealthLabs6 to #5
Biggest losses
Moved down this week
Abbott8 to #14
Roche Diagnostics7 to #12
Siemens Healthineers5 to #13
Unchanged at the top
Leader held position
Labcorpstayed #1
Rank history
Weekly rank changes for the current top 10
| Rank | Brand | Previous | Current | Change | Best |
|---|---|---|---|---|---|
| #1 | #1 | #1 | 0 | #1 | |
| #2 | #3 | #2 | 1 | #2 | |
| #3 | #4 | #3 | 1 | #1 | |
| #4 | #2 | #4 | 2 | #2 | |
| #5 | #11 | #5 | 6 | #5 | |
| #6 | New | #6 | New | #6 | |
| #7 | #17 | #7 | 10 | #7 | |
| #8 | #7 | #8 | 1 | #4 | |
| #9 | #18 | #9 | 9 | #9 | |
| #10 | #9 | #10 | 1 | #7 |
Current brand snapshot
25 brands
| # | Pos. | Brand |  ChatGPT |  Google AI Mode |  Gemini |  Perplexity | Seen in |
|---|---|---|---|---|---|---|---|
| 1 | 0 | #2 | #2 | #1 | - | | |
| 2 | +1 | #4 | #4 | #2 | - | | |
| 3 | +1 | #1 | #1 | #10 | - | | |
| 4 | -2 | #3 | #3 | #7 | - | | |
| 5 | +6 | #6 | #10 | #4 | - | | |
| 6 | New | #8 | #8 | #5 | - | | |
| 7 | +10 | - | #7 | #3 | - | | |
| 8 | -1 | - | - | - | #1 | | |
| 9 | +9 | #7 | #6 | - | - | | |
| 10 | -1 | - | - | - | #2 | | |
| 11 | +3 | #5 | #9 | - | - | | |
| 12 | -7 | - | - | - | #3 | | |
| 13 | -5 | - | - | - | #4 | | |
| 14 | -8 | - | - | - | #5 | | |
| 15 | -2 | - | #5 | - | - | | |
| 16 | New | - | - | #6 | - | | |
| 17 | New | JO Johnson & Johnson (Janssen / formerly J&J Diagnostics legacy) | - | - | - | #6 | |
| 18 | New | - | - | - | #7 | | |
| 19 | +3 | - | - | - | #8 | | |
| 20 | New | - | - | #8 | - | | |
| 21 | New | #9 | - | - | - | | |
| 22 | New | - | - | #9 | - | | |
| 23 | New | - | - | - | #9 | | |
| 24 | New | - | - | - | #10 | | |
| 25 | +2 | #10 | - | - | - | |
Current source snapshot
33 sources
| # | Source | Ment.Mentions | LLMs |
|---|---|---|---|
| 1 | 6 | | |
| 2 | 5 | | |
| 3 | 4 | | |
| 4 | HealthlabsOfficial | 3 | |
| 5 | 3 | | |
| 6 | DirectlabsOfficial | 2 | |
| 7 | WalkinlabOfficial | 2 | |
| 8 | 23andmeOfficial | 1 | |
| 9 | AbbottOfficial | 1 | |
| 10 | BeckmancoulterOfficial | 1 | |
| 11 | Bio RadOfficial | 1 | |
| 12 | ClearblueOfficial | 1 | |
| 13 | RocheOfficial | 1 | |
| 14 | EverlywellOfficial | 1 | |
| 15 | 1 | | |
| 16 | 1 | | |
| 17 | 1 | | |
| 18 | LetsgetcheckedOfficial | 1 | |
| 19 | MylabboxOfficial | 1 | |
| 20 | MyriadOfficial | 1 | |
| 21 | LabcorpOfficial | 1 | |
| 22 | OrthoclinicaldiagnosticsOfficial | 1 | |
| 23 | PoweredbyashOfficial | 1 | |
| 24 | 1 | | |
| 25 | ProovtestOfficial | 1 | |
| 26 | QuestdiagnosticsOfficial | 1 | |
| 27 | Siemens HealthineersOfficial | 1 | |
| 28 | 1 | | |
| 29 | 1 | | |
| 30 | ThermofisherOfficial | 1 | |
| 31 | UltalabtestsOfficial | 1 | |
| 32 | 1 | | |
| 33 | 1 | |
Position history
Position history chart for the top brands in this AI Brand Index category. Lower rank numbers mean stronger visibility.
| Brand | Latest rank |
|---|---|
| Quest Diagnostics | 1 |
| Labcorp | 2 |
| Everlywell | 3 |
| LetsGetChecked | 4 |
| myLAB Box | 5 |
Current brand snapshot
10 brands
| # | Pos. | Brand | ChatGPT | Google AI Mode | Gemini | Perplexity | Seen in |
|---|---|---|---|---|---|---|---|
| 1 | 0 | #1 | - | - | - | | |
| 2 | 0 | #2 | - | - | - | | |
| 3 | New | #3 | - | - | - | | |
| 4 | New | #4 | - | - | - | | |
| 5 | New | #5 | - | - | - | | |
| 6 | New | #6 | - | - | - | | |
| 7 | New | #7 | - | - | - | | |
| 8 | New | #8 | - | - | - | | |
| 9 | New | #9 | - | - | - | | |
| 10 | New | #10 | - | - | - | |
Current source snapshot
8 sources
| # | Source | Ment.Mentions | LLMs |
|---|---|---|---|
| 1 | 6 | | |
| 2 | 5 | | |
| 3 | 3 | | |
| 4 | 3 | | |
| 5 | HealthlabsOfficial | 1 | |
| 6 | 1 | | |
| 7 | 1 | | |
| 8 | 1 | |
Position history
Position history chart for the top brands in this AI Brand Index category. Lower rank numbers mean stronger visibility.
| Brand | Latest rank |
|---|---|
| Quest Diagnostics | 1 |
| Labcorp | 2 |
| Everlywell | 3 |
| LetsGetChecked | 4 |
| Function Health | 5 |
Current brand snapshot
10 brands
| # | Pos. | Brand | ChatGPT | Google AI Mode | Gemini | Perplexity | Seen in |
|---|---|---|---|---|---|---|---|
| 1 | +2 | - | #1 | - | - | | |
| 2 | +2 | - | #2 | - | - | | |
| 3 | -2 | - | #3 | - | - | | |
| 4 | -2 | - | #4 | - | - | | |
| 5 | New | - | #5 | - | - | | |
| 6 | +1 | - | #6 | - | - | | |
| 7 | New | - | #7 | - | - | | |
| 8 | New | - | #8 | - | - | | |
| 9 | -4 | - | #9 | - | - | | |
| 10 | New | - | #10 | - | - | |
Current source snapshot
10 sources
| # | Source | Ment.Mentions | LLMs |
|---|---|---|---|
| 1 | DirectlabsOfficial | 1 | |
| 2 | HealthlabsOfficial | 1 | |
| 3 | 1 | | |
| 4 | 1 | | |
| 5 | MylabboxOfficial | 1 | |
| 6 | 1 | | |
| 7 | 1 | | |
| 8 | 1 | | |
| 9 | UltalabtestsOfficial | 1 | |
| 10 | WalkinlabOfficial | 1 | |
Position history
Position history chart for the top brands in this AI Brand Index category. Lower rank numbers mean stronger visibility.
| Brand | Latest rank |
|---|---|
| Labcorp OnDemand | 1 |
| LetsGetChecked | 2 |
| DirectLabs | 3 |
| HealthLabs | 4 |
| Walk-In Lab | 5 |
Current brand snapshot
10 brands
| # | Pos. | Brand | ChatGPT | Google AI Mode | Gemini | Perplexity | Seen in |
|---|---|---|---|---|---|---|---|
| 1 | +2 | - | - | #1 | - | | |
| 2 | 0 | - | - | #2 | - | | |
| 3 | +4 | - | - | #3 | - | | |
| 4 | New | - | - | #4 | - | | |
| 5 | New | - | - | #5 | - | | |
| 6 | New | - | - | #6 | - | | |
| 7 | -6 | - | - | #7 | - | | |
| 8 | New | - | - | #8 | - | | |
| 9 | New | - | - | #9 | - | | |
| 10 | New | - | - | #10 | - | |
Current source snapshot
10 sources
| # | Source | Ment.Mentions | LLMs |
|---|---|---|---|
| 1 | ClearblueOfficial | 1 | |
| 2 | DirectlabsOfficial | 1 | |
| 3 | EverlywellOfficial | 1 | |
| 4 | HealthlabsOfficial | 1 | |
| 5 | LetsgetcheckedOfficial | 1 | |
| 6 | LabcorpOfficial | 1 | |
| 7 | PoweredbyashOfficial | 1 | |
| 8 | ProovtestOfficial | 1 | |
| 9 | QuestdiagnosticsOfficial | 1 | |
| 10 | WalkinlabOfficial | 1 | |
Position history
Position history chart for the top brands in this AI Brand Index category. Lower rank numbers mean stronger visibility.
| Brand | Latest rank |
|---|---|
| Thermo Fisher Scientific | 1 |
| Danaher (Beckman Coulter) | 2 |
| Roche Diagnostics | 3 |
| Siemens Healthineers | 4 |
| Abbott | 5 |
Johnson & Johnson (Janssen / formerly J&J Diagnostics legacy)
Current brand snapshot
10 brands
| # | Pos. | Brand | ChatGPT | Google AI Mode | Gemini | Perplexity | Seen in |
|---|---|---|---|---|---|---|---|
| 1 | 0 | - | - | - | #1 | | |
| 2 | +3 | - | - | - | #2 | | |
| 3 | -1 | - | - | - | #3 | | |
| 4 | 0 | - | - | - | #4 | | |
| 5 | -2 | - | - | - | #5 | | |
| 6 | New | JO Johnson & Johnson (Janssen / formerly J&J Diagnostics legacy) | - | - | - | #6 | |
| 7 | New | - | - | - | #7 | | |
| 8 | New | - | - | - | #8 | | |
| 9 | New | - | - | - | #9 | | |
| 10 | New | - | - | - | #10 | |
Current source snapshot
10 sources
| # | Source | Ment.Mentions | LLMs |
|---|---|---|---|
| 1 | 23andmeOfficial | 1 | |
| 2 | AbbottOfficial | 1 | |
| 3 | BeckmancoulterOfficial | 1 | |
| 4 | Bio RadOfficial | 1 | |
| 5 | RocheOfficial | 1 | |
| 6 | 1 | | |
| 7 | MyriadOfficial | 1 | |
| 8 | OrthoclinicaldiagnosticsOfficial | 1 | |
| 9 | Siemens HealthineersOfficial | 1 | |
| 10 | ThermofisherOfficial | 1 | |
Common AI search questions about Medical Tests
Q1
Who leads Medical Tests in AI answers?
Labcorp is the most recommended medical tests brand in the latest AI Brand Index run. The next highest-ranked brands are LetsGetChecked and Quest Diagnostics. The engines disagree on the leader. ChatGPT and Google AI Mode both name Quest Diagnostics first, Gemini names Labcorp OnDemand, and Perplexity names Thermo Fisher Scientific.
Q2
Which cited sources are used for Medical Tests?
The most cited sources for medical tests recommendations are Reddit, Topconsumerreviews and Healthline, out of 33 tracked sources. No single publisher dominates. The most cited sources are Reddit, Topconsumerreviews and Healthline, which means the citation field is open.
Q3
How fresh is this Medical Tests ranking?
The AI Brand Index updates every Sunday. In the latest run, Walk-In Lab entered the top 10 and DirectLabs, Ulta Lab Tests, Abbott, Roche Diagnostics and HealthLabs and 1 other brand moved three or more positions in the medical tests index.
How to cite this report
Cite the canonical SupaIntent report page when referencing this AI visibility ranking.
SupaIntent AI Brand Index: Medical Tests. https://supaintent.com/ai-brand-index/health-and-beauty-health-care-medical-tests
Report data
Download the same ranking data used by the chart, tables and Dataset schema.
AI Brand Index methodology
Rankings use collected AI answers, cited sources, brand-site matching, and provider-level position history.
- SupaIntent measures buying-intent AI answers across ChatGPT, Google AI Mode, Gemini and Perplexity.
- This report uses the latest observed AI answers for Medical Tests, including 25 recommended brands and 33 cited sources.
- Brand sites are identified from official domains and subdomains, then separated from review, community and publisher sources.
- Weekly movement compares the latest rank with the previous collected position for each brand.
Reveal where AI sends your clients
Track prompt-level visibility across ChatGPT, Gemini, Perplexity, and Google AI search. See which competitors win the answer, which sources shape the response, and where your brand is missing.