Dataset size
The latest Medical Tests run found 19 recommended brands and 20 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 which brands are recommended, which sources are cited, and how rankings change week over week. Use it to see the freshest AI visibility data for this category.
Updated 4 October 2026
Brands
Category coverage
19
ranked across AI engines
Sources
Evidence base
20
domains cited in answers
Brand sites
Official share
15%
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 |
|---|---|
| Quest Diagnostics | 1 |
| Everlywell | 2 |
| Labcorp | 3 |
| Let'sGetChecked | 4 |
| Sonic Healthcare | 5 |
What AI tools say about Medical Tests
Movement
What changed this week?
Quest Diagnostics overtook Labcorp this week to take the top position.
Sources
Which sources shape AI answers?
No single publisher dominates. The most cited sources are Testing, Jinfiniti and Healthline, which means the citation field is open.
Citation-ready
Key facts from this AI Brand Index report
Current leader
Quest Diagnostics ranks #1 for Medical Tests in the latest SupaIntent AI Brand Index run.
Top brands
Quest Diagnostics, Everlywell, and Labcorp lead Medical Tests across AI answers from ChatGPT, Google AI Mode, Gemini and Perplexity.
Brand sites
Testing, Jinfiniti, and Healthline are the most cited brand sites in this category.
Weekly movement
Top 10 onlyBiggest gains
Moved up this week
myLAB Box13 to #7
Sonic Healthcare10 to #5
Eurofins Scientific4 to #6
Biggest losses
Moved down this week
Abbott3 to #8
Rank history
Weekly rank changes for the current top 10
| Rank | Brand | Previous | Current | Change | Best |
|---|---|---|---|---|---|
| #1 | #2 | #1 | 1 | #1 | |
| #2 | #4 | #2 | 2 | #2 | |
| #3 | #1 | #3 | 2 | #1 | |
| #4 | #6 | #4 | 2 | #2 | |
| #5 | #15 | #5 | 10 | #5 | |
| #6 | #10 | #6 | 4 | #6 | |
| #7 | #20 | #7 | 13 | #6 | |
| #8 | #5 | #8 | 3 | #2 | |
| #9 | #8 | #9 | 1 | #8 | |
| #10 | #9 | #10 | 1 | #8 |
Current brand snapshot
19 brands
| # | Pos. | Brand |  ChatGPT |  Google AI Mode |  Gemini |  Perplexity | Seen in |
|---|---|---|---|---|---|---|---|
| 1 | +1 | #1 | #1 | #3 | - | | |
| 2 | +2 | #3 | #8 | #1 | - | | |
| 3 | -2 | #2 | #2 | #9 | - | | |
| 4 | +2 | #4 | #9 | #2 | - | | |
| 5 | +10 | #6 | #3 | - | - | | |
| 6 | +4 | #7 | #5 | - | - | | |
| 7 | +13 | #5 | #10 | - | - | | |
| 8 | -3 | - | #4 | - | - | | |
| 9 | -1 | - | - | #4 | - | | |
| 10 | -1 | - | - | #5 | - | | |
| 11 | +6 | - | #6 | - | - | | |
| 12 | +2 | - | - | #6 | - | | |
| 13 | +9 | - | #7 | - | - | | |
| 14 | -2 | - | - | #7 | - | | |
| 15 | -4 | #8 | - | - | - | | |
| 16 | -5 | - | - | #8 | - | | |
| 17 | +2 | #9 | - | - | - | | |
| 18 | 0 | - | - | #10 | - | | |
| 19 | New | #10 | - | - | - | |
Current source snapshot
20 sources
| # | Source | Ment.Mentions | LLMs |
|---|---|---|---|
| 1 | 9 | | |
| 2 | 6 | | |
| 3 | 4 | | |
| 4 | 4 | | |
| 5 | 4 | | |
| 6 | 3 | | |
| 7 | HealthlabsOfficial | 2 | |
| 8 | MayocliniclabsOfficial | 2 | |
| 9 | 2 | | |
| 10 | EurofinsOfficial | 1 | |
| 11 | 1 | | |
| 12 | 1 | | |
| 13 | 1 | | |
| 14 | 1 | | |
| 15 | LabcorpOfficial | 1 | |
| 16 | 1 | | |
| 17 | QuestdiagnosticsOfficial | 1 | |
| 18 | 1 | | |
| 19 | 1 | | |
| 20 | 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 |
| Let'sGetChecked | 4 |
| myLAB Box | 5 |
Current brand snapshot
10 brands
| # | Pos. | Brand | ChatGPT | Google AI Mode | Gemini | Perplexity | Seen in |
|---|---|---|---|---|---|---|---|
| 1 | +1 | #1 | - | - | - | | |
| 2 | +1 | #2 | - | - | - | | |
| 3 | +6 | #3 | - | - | - | | |
| 4 | +4 | #4 | - | - | - | | |
| 5 | +5 | #5 | - | - | - | | |
| 6 | +2 | #6 | - | - | - | | |
| 7 | -1 | #7 | - | - | - | | |
| 8 | -2 | #8 | - | - | - | | |
| 9 | -3 | #9 | - | - | - | | |
| 10 | New | #10 | - | - | - | |
Current source snapshot
12 sources
| # | Source | Ment.Mentions | LLMs |
|---|---|---|---|
| 1 | 7 | | |
| 2 | 4 | | |
| 3 | 4 | | |
| 4 | HealthlabsOfficial | 2 | |
| 5 | MayocliniclabsOfficial | 2 | |
| 6 | 2 | | |
| 7 | EurofinsOfficial | 1 | |
| 8 | 1 | | |
| 9 | 1 | | |
| 10 | LabcorpOfficial | 1 | |
| 11 | QuestdiagnosticsOfficial | 1 | |
| 12 | 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 |
| Sonic Healthcare | 3 |
| Abbott | 4 |
| Eurofins Scientific | 5 |
Current brand snapshot
10 brands
| # | Pos. | Brand | ChatGPT | Google AI Mode | Gemini | Perplexity | Seen in |
|---|---|---|---|---|---|---|---|
| 1 | +1 | - | #1 | - | - | | |
| 2 | -1 | - | #2 | - | - | | |
| 3 | New | - | #3 | - | - | | |
| 4 | -1 | - | #4 | - | - | | |
| 5 | New | - | #5 | - | - | | |
| 6 | New | - | #6 | - | - | | |
| 7 | +2 | - | #7 | - | - | | |
| 8 | -3 | - | #8 | - | - | | |
| 9 | -3 | - | #9 | - | - | | |
| 10 | -1 | - | #10 | - | - | |
Current source snapshot
7 sources
| # | Source | Ment.Mentions | LLMs |
|---|---|---|---|
| 1 | 3 | | |
| 2 | 2 | | |
| 3 | 1 | | |
| 4 | 1 | | |
| 5 | 1 | | |
| 6 | 1 | | |
| 7 | 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 |
|---|---|
| Everlywell | 1 |
| Let'sGetChecked | 2 |
| Quest Diagnostics | 3 |
| Function Health | 4 |
| InsideTracker | 5 |
Current brand snapshot
10 brands
| # | Pos. | Brand | ChatGPT | Google AI Mode | Gemini | Perplexity | Seen in |
|---|---|---|---|---|---|---|---|
| 1 | 0 | - | - | #1 | - | | |
| 2 | 0 | - | - | #2 | - | | |
| 3 | -2 | - | - | #3 | - | | |
| 4 | 0 | - | - | #4 | - | | |
| 5 | 0 | - | - | #5 | - | | |
| 6 | +2 | - | - | #6 | - | | |
| 7 | 0 | - | - | #7 | - | | |
| 8 | -2 | - | - | #8 | - | | |
| 9 | -6 | - | - | #9 | - | | |
| 10 | -4 | - | - | #10 | - | |
Current source snapshot
4 sources
| # | Source | Ment.Mentions | LLMs |
|---|---|---|---|
| 1 | 6 | | |
| 2 | 2 | | |
| 3 | 1 | | |
| 4 | 1 | |
Common AI search questions about Medical Tests
Q1
Who leads Medical Tests in AI answers?
Quest Diagnostics is the most recommended medical tests brand in the latest AI Brand Index run. The next highest-ranked brands are Everlywell and Labcorp. Per-engine leader data is not available for this run.
Q2
Which cited sources are used for Medical Tests?
The most cited sources for medical tests recommendations are Testing, Jinfiniti and Healthline, out of 20 tracked sources. No single publisher dominates. The most cited sources are Testing, Jinfiniti 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, myLAB Box, Sonic Healthcare, Eurofins Scientific and Abbott 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 19 recommended brands and 20 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.
[ get started ]
Make AI Search your next revenue channel
Track and optimize visibility in ChatGPT, Gemini and other AI Search engines to drive traffic to your website that converts.