Federal contractor profile
EXPERIMENTAL PATHOLOGY LABORATORIES, INC.
UEI E4S8XBDQ4AN1CAGE 5V709Company website ↗
Active
Small Business
Overview
- Legal name
- EXPERIMENTAL PATHOLOGY LABORATORIES, INC.
- Also known as
- EXPERIMENTAL PATHOLOGY LABORATORIES INC
- Registered location
- STERLING, VA, USA
- Website
- Company website ↗
- Primary NAICS
- 541714 — Research and Development in Biotechnology (except Nanobiotechnology)
- Latest award activity
- Sep 9, 2026
Read company summary
EXPERIMENTAL PATHOLOGY LABORATORIES, INC. is associated with UEI E4S8XBDQ4AN1 and CAGE 5V709 in public federal records. AcornBids currently links 15 prime awards totaling $122.9M in obligations to this entity. Its largest recorded federal customer by obligations is Department of Health and Human Services. Its recorded federal awards include work classified as Refrigerated Warehousing and Storage. These categories describe the loaded award records, not a complete list of company capabilities. Its primary SAM.gov NAICS is 541714 (Research and Development in Biotechnology (except Nanobiotechnology)). Its public SAM.gov registration lists STERLING, VA, USA.
At a glance
Lifetime prime obligations$122.9M
Prime awards15
Awards with future end dates3
Top-agency concentration
Not available
Why this customer concentration
Detailed agency totals are not available in this stored profile.
Largest positive coded-agency total ÷ all positive coded-agency totals × 100
Missing data is shown as unavailable.
Prime contract obligations across loaded award records. Obligations are not revenue or contract ceilings. Summary updated Oct 7, 2026. Refresh pending; these totals may be out of date.
Business information
Public SAM.gov registration details.
- Legal name
- EXPERIMENTAL PATHOLOGY LABORATORIES, INC.
- Doing business as
- EXPERIMENTAL PATHOLOGY LABORATORIES INC
- UEI
- E4S8XBDQ4AN1
- CAGE
- 5V709
- Registered address
- 45600 TERMINAL DR, STERLING, VA, 20166, USA
- Registration status
- Active
- Primary NAICS
- 541714 — Research and Development in Biotechnology (except Nanobiotechnology)
- SAM activation
- Jul 30, 2026
- Initial registration
- Jan 29, 2002
- Entity start
- May 13, 1971
- SAM updated
- Jul 30, 2026
- Registration expires
- Jul 28, 2027
- Fiscal year end
- Jun 30
- Place of incorporation
- VA, USA
Research brief
Source facts
- Loaded prime-award records link 15 awards and $122,882,921 in reported obligations to this legal entity. Source
- Recorded awards include Refrigerated Warehousing and Storage (NAICS 493120); this classification is not proof of every company capability. Source
- An example award describes: IGF::OT::IGF "PATHOLOGY PEER REVIEW AND PATHOLOGY SUPPORT FOR THE DNTP AND DIR AT NIEHS" EXPERIMENTAL PATHOLOGY LABORATORIES (EPL) Source
Federal award analysis
Net transaction obligations by federal fiscal period.
Selected transaction obligations$81.1M
Prime contracts
$3.7MFY2015$4.1MFY2016$4.6MFY2017$8.6MFY2018$7.9MFY2019$8.7MFY2020$8.0MFY2021$7.5MFY2022$5.3MFY2023$8.0MFY2024$7.8MFY2025$6.8MFY2026
Reported transaction obligations by federal fiscal period; includes deobligations. Missing transactions are not estimated. Coverage: 15 of 15 selected awards. Select a period to explore its awards.
Recent federal awards
Prime contract awards. Select an award to review its history and source evidence.
| Award / description | Awarding agency | Obligations | Start date | End date |
|---|---|---|---|---|
| HHSN273201500014CIGF::OT::IGF "PATHOLOGY PEER REVIEW AND PATHOLOGY SUPPORT FOR THE DNTP AND DIR AT NIEHS" EXPERIMENTAL PATHOLOGY LABORATORIES (EPL) | Department of Health and Human Services | $33.3M | Jul 23, 2015 | Jul 27, 2026 |
| 75N96024C00002MANAGEMENT AND SUPPORT OF AN ARCHIVES AND REPOSITORY CONTRACT FOR THE NATIONAL TOXICOLOGY PROGRAM (NTP) AND THE NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES (NIEHS)… | Department of Health and Human Services | $17.5M | Mar 29, 2024 | Mar 28, 2027 |
| 75N96018C00006MANAGEMENT AND SUPPORT OF AN ARCHIVES AND REPOSITORY CONTRACT (AARC) FOR THE NATIONAL TOXICOLOGY PROGRAM (NTP) AND THE NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES (NIEHS) | Department of Health and Human Services | $28.3M | Sep 25, 2018 | Sep 28, 2023 |
| 75N96026C00002PATHOLOGY RESEARCH FOR THE NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES-B | Department of Health and Human Services | $1.6M | Jul 18, 2026 | Jul 17, 2027 |
| 75N93024P01204HISTOPATHOLOGY SERVICES TO SUPPORT 5 EFFICACY STUDIES STARTING WITH PREPARED SLIDES. OPTIONS FOR ADDITIONAL STUDIES STARTING WITH PREPARED SLIDES AS WELL AS STUDIES STARTING WITH… | Department of Health and Human Services | $217.8K | Sep 25, 2024 | Mar 24, 2027 |
| HHSF223032480T16PATHOLOGY SUPPORT SERVICES | Department of Health and Human Services | $14.9K | May 15, 2007 | Jun 22, 2008 |
| 75D30124P19162MICROSCOPIC EVALUATION OF SLIDES CONTAINING MOUSE TISSUES OBTAINED FROM PEROXYACETIC ACID AEROSOL-EXPOSED MICE | Department of Health and Human Services | $12.7K | Jun 12, 2024 | Apr 22, 2025 |
| HHSF223032480T14PATHOLOGY SUPPORT SERVICES | Department of Health and Human Services | $55.9K | Nov 1, 2006 | Aug 22, 2008 |
| HHSF2232480T15PATHOLOGY SUPPORT SERVICES | Department of Health and Human Services | $11.2K | Dec 29, 2006 | Jun 22, 2008 |
| HHSF223032480T5PATHOLOGY SUPPORT SERVICES TO 5 MOD 1 | Department of Health and Human Services | $128.8K | Dec 30, 2003 | Jun 22, 2008 |
Upcoming positioning windows
Modeled recompete windows are estimates, not announced solicitations or guarantees.
Registration, certifications & contacts
| Registration evidence | Date |
|---|---|
| SAM updated | Jul 30, 2026 |
| Source loaded | Sep 26, 2026 |
| Initial registration | Jan 29, 2002 |
| Entity start | May 13, 1971 |
Registration classifications: Small Business. These are separate from the reported certificates above.
| Industry | Reported size status |
|---|---|
| 493120 — Refrigerated Warehousing and Storage | Not reported |
| 541714 — Research and Development in Biotechnology (except Nanobiotechnology) | Not reported |
| 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | Not reported |
| 541940 — Veterinary Services | Not reported |
| 541990 — All Other Professional, Scientific, and Technical Services | Not reported |
| Contact | Role | Published contact methods | Evidence | Source date |
|---|---|---|---|---|
| RICHARD D CASTRO | Government business | Contact method not published | SAM registration | Not available |
| JADRIAN HELMS | Alternate government business | Contact method not published | SAM registration | Not available |
| RICHARD CASTRO | Electronic business | Contact method not published | SAM registration | Not available |
| JADRIAN HELMS | Alternate electronic business | Contact method not published | SAM registration | Not available |
Registered industries
- 493120 — Refrigerated Warehousing and Storage
- 541714 — Research and Development in Biotechnology (except Nanobiotechnology)
- 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- 541940 — Veterinary Services
- 541990 — All Other Professional, Scientific, and Technical Services
Registration classifications and published certificates do not by themselves establish eligibility for a particular solicitation. View SAM source
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About EXPERIMENTAL PATHOLOGY LABORATORIES, INC.
What products and services appear in its federal awards?
Recorded award industries: 493120 — Refrigerated Warehousing and Storage; 541711; 541712.
Recorded products and services: AZ11 — OTHER RESEARCH AND DEVELOPMENT - BASIC RESEARCH; R499 — Other Professional Services; AJ11 — GENERAL SCIENCE AND TECHNOLOGY R&D SERVICES; GENERAL SCIENCE AND TECHNOLOGY; BASIC RESEARCH.
Examples from recent award records:
- IGF::OT::IGF "PATHOLOGY PEER REVIEW AND PATHOLOGY SUPPORT FOR THE DNTP AND DIR AT NIEHS" EXPERIMENTAL PATHOLOGY LABORATORIES (EPL)
- MANAGEMENT AND SUPPORT OF AN ARCHIVES AND REPOSITORY CONTRACT FOR THE NATIONAL TOXICOLOGY PROGRAM (NTP) AND THE NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES (NIEHS)…
These records describe federal award work, not every company capability. Review the award evidence.
Where is the company registered?
45600 TERMINAL DR, STERLING, Virginia 20166, United States
Registered location from SAM.gov; award performance locations may differ.
What is its primary registered industry?
541714 — Research and Development in Biotechnology (except Nanobiotechnology).
Primary SAM.gov NAICS classification.
Which federal agencies are represented in its awards?
Department of Health and Human Services; Environmental Protection Agency; Department of the Interior.
Data coverage and methodology
Sources: SAM.gov registration, USAspending awards and transactions, and linked supporting records. Prime contract obligations, IDV ceilings and assistance amounts are kept separate. Missing records are not zero activity. Company claims are labeled separately. Recompete signals are rule-based scores out of 100. Positioning windows are AcornBids estimates.
Disclosed relationships only. Missing records do not establish that a contractor has no partners. Ambiguous parent award identifiers are excluded.
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