Company lists · Data verified August 2026
Top 25 Diagnostic companies venture capital firms based in the United States
There are 1,733 diagnostic companies venture capital firms headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 299,327 professional contacts across them, including 106,707 with verified work emails and 89,921 with mobile numbers. San Diego is the largest hub.
This list covers diagnostic companies venture capital firms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.
The 25 largest diagnostic companies venture capital firms based in the United States
Ranked by team size| # | Company | Verified emails |
|---|---|---|
| 1 |  Thermo Fisher Scientific | 39,333 |
| 2 |  Agilent Technologies | 7,285 |
| 3 |  Labcorp | 14,923 |
| 4 |  Quest Diagnostics | 621 |
| 5 |  Beckman Coulter Diagnostics | 3,001 |
| 6 |  Illumina | 4,419 |
| 7 |  Natera | 4,137 |
| 8 |  Guardant Health | 1,607 |
| 9 |  Revvity | 2,055 |
| 10 |  Arup Laboratories | 1,233 |
| 11 |  Myriad Genetics | 1,440 |
| 12 |  Foundation Medicine | 1,182 |
| 13 |  Neogenomics Laboratories | 1,004 |
| 14 |  Bioreference | 704 |
| 15 |  Clinical Pathology Laboratories | 373 |
| 16 |  Sysmex America, INC | 1,044 |
| 17 |  Q Solutions | 677 |
| 18 |  Sonora Quest Laboratories Laboratory Sciences Of Arizona | 409 |
| 19 |  Genscript | 468 |
| 20 |  Genedx | 829 |
| 21 |  Pathgroup | 401 |
| 22 |  Nova Biomedical | 3 |
| 23 |  Meso Scale Diagnostics, LLC | 11 |
| 24 |  Invitae | 295 |
| 25 |  Tricore Reference Laboratories | 224 |
Showing 25 of 1,733 diagnostic companies venture capital firms based in the United States
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Diagnostic companies venture capital firms based in the United States at a glance
As of Aug 28, 2026Companies by employee count
Diagnostic companies venture capital firms by metro
| Metro | Companies |
|---|---|
| Diagnostic companies venture capital firms in San Diego | 51 |
| Diagnostic companies venture capital firms in New York | 40 |
| Diagnostic companies venture capital firms in Houston | 39 |
| Diagnostic companies venture capital firms in Boston | 32 |
| Diagnostic companies venture capital firms in Irvine | 27 |
| Diagnostic companies venture capital firms in Cambridge | 22 |
| Diagnostic companies venture capital firms in Austin | 21 |
| Diagnostic companies venture capital firms in San Francisco | 21 |
How this list was built
- Source
- The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
- Inclusion
- Companies whose own business descriptions match “diagnostic companies venture capital firms”, with match quality audited by blind human judging, and headquartered in the United States.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Contact records re-verify on a rolling cadence; 194 contacts on this list were re-verified in the last 30 days.
- Refresh
- Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.
Frequently asked
How many diagnostic companies venture capital firms are there based in the United States?
There are 1,733 diagnostic companies venture capital firms headquartered in the United States as of August 2026 (RevenueBase).
What is the largest company on this list?
Thermo Fisher Scientific, headquartered in Waltham, tops this list with the largest team on record.
Which city has the most diagnostic companies venture capital firms?
San Diego leads with 51 headquartered companies, followed by New York (40) and Houston (39).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 106,707 verified decision-maker contacts tracked across these 1,733 companies.
How current is this list?
The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.
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About this data
RevenueBase is a B2B contact data platform. Its company graph covers 21.3 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph, the same data that powers RevenueBase's B2B data products and the free research portal.
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