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NAICS Code· 621511

Medical Laboratories

This U.S. industry comprises establishments known as medical laboratories primarily engaged in providing analytic or diagnostic services, including body fluid analysis, generally to the medical profession or to the patient on referral from a health practitioner. Illustrative Examples: Blood analysis laboratories Medical pathology laboratories Medical bacteriological laboratories Medical testing laboratories Medical forensic laboratories Cross-References.Show more

NAICS 621511 – Medical Laboratories encompasses the operation of facilities that perform clinical diagnostic testing on human specimens, including blood, tissue, and bodily fluids, to support medical diagnosis, treatment, and public health surveillance. Services under this code include molecular diagnostics, immunology assays, microbiological cultures, cytology, and toxicology screening, often delivered through automated analytical platforms and regulated under CLIA, CAP, and ISO standards.

127
Active Contracts
$983.7M
Total Obligations (12mo)
1.4K
Awarded Contracts (12mo)
304
Contractors Awarded (12mo)
-47.3%
YoY Growth

Industry Spending Overview

Federal obligations, top contractors and agencies, and related industry codes for NAICS 621511.

AI Industry Description

NAICS 621511 – Medical Laboratories encompasses the operation of facilities that perform clinical diagnostic testing on human specimens, including blood, tissue, and bodily fluids, to support medical diagnosis, treatment, and public health surveillance. Services under this code include molecular dia...

NAICS 621511 – Medical Laboratories encompasses the operation of facilities that perform clinical diagnostic testing on human specimens, including blood, tissue, and bodily fluids, to support medical diagnosis, treatment, and public health surveillance. Services under this code include molecular diagnostics, immunology assays, microbiological cultures, cytology, and toxicology screening, often delivered through automated analytical platforms and regulated under CLIA, CAP, and ISO standards. In the federal contracting landscape, these laboratories support mission-critical health monitoring for diplomatic personnel, military deployments, global health initiatives, and emergency response operations, frequently through outsourced contracts with specialized service providers rather than in-house federal labs. The primary contractor in this sector is ALTITUDE TECHNOLOGIES INC., a mid-sized firm with expertise in deploying scalable, compliant laboratory solutions for federal clients. The competitive landscape is dominated by specialized service providers with strong regulatory compliance credentials, rather than large primes, reflecting the technical and accreditation-intensive nature of clinical lab services. Contracting typically requires CAP accreditation, CLIA certification, and experience in high-complexity testing environments. The Department of State is the leading federal agency awarding contracts under this NAICS code, primarily to support medical surveillance and diagnostic services for U.S. embassies, consulates, and overseas personnel. Demand is driven by global health security programs, employee wellness mandates, and biothreat detection protocols in high-risk regions, with contracts often structured as indefinite-delivery/indefinite-quantity (IDIQ) vehicles requiring rapid response capabilities. The market is characterized by high barriers to entry due to stringent regulatory requirements, but offers consistent opportunity density for accredited, agile providers with proven experience in international health logistics and federal compliance. Contractors with dual capabilities in both clinical diagnostics and expeditionary lab support are best positioned to compete for sustained, mission-critical awards.

Top Contractors

Companies with the highest total award value under NAICS 621511, ranked by dollars won.

Ranked by total awards
CompanyTotal AwardsContracts
LABORATORY CORPORATION OF AMERICA$503.5M271
QUEST DIAGNOSTICS INCORPORATED$237.7M409
FOUNDATION MEDICINE, INC.$21.8M2
BAYLOR MIRACA GENETICS LABORATORIES LLC$11.6M2
UNIVERSITY OF WASHINGTON SCHOOL OF MEDICINE$10.4M4
ARUP LABORATORIES INC$9.4M12
CENTER FOR DISEASE DETECTION, LLC$9.2M4
OREGON HEALTH & SCIENCE UNIVERSITY$9.0M1
CREATIVE TESTING SOLUTIONS Tempe AZ 85282 USA$8.6M3
FULGENT THERAPEUTICS LLC$6.6M2

Top Agencies

Federal agencies directing the most contract spending toward NAICS 621511.

Dha Enterprise Medical Support Ems-Cd1 award$364.7M
Department Of Veterans Affairs477 awards$241.8M
Department Of Defense253 awards$76.7M
257-NETWORK Contract Office 17 (36C257)13 awards$72.6M
245-NETWORK Contract Office 5 (36C245)2 awards$49.9M
Department Of Health And Human Services120 awards$38.3M
262-NETWORK Contract Office 22 (36C262)2 awards$31.7M
260-NETWORK Contract Office 20 (36C260)8 awards$26.4M
242-NETWORK Contract Office 02 (36C242)6 awards$12.8M
252-NETWORK Contract Office 12 (36C252)6 awards$10.8M

Related NAICS Codes

Industries similar to Medical Laboratories, by shared sector, subsector, and industry group.

Diagnostic Imaging Centers

This U.S. industry comprises establishments known as diagnostic imaging centers primarily engaged in...
621512Same Industry GroupHigh Similarity

Offices of Physicians (except Mental Health Specialists)

This U.S. industry comprises establishments of health practitioners having the degree of M.D. (Docto...
621111Same SubsectorMedium Similarity

Offices of Physicians, Mental Health Specialists

This U.S. industry comprises establishments of health practitioners having the degree of M.D. (Docto...
621112Same SubsectorMedium Similarity

Offices of Dentists

This industry comprises establishments of health practitioners having the degree of D.M.D. (Doctor o...
621210Same SubsectorMedium Similarity

Offices of Chiropractors

This industry comprises establishments of health practitioners having the degree of D.C. (Doctor of ...
621310Same SubsectorMedium Similarity

Offices of Optometrists

This industry comprises establishments of health practitioners having the degree of O.D. (Doctor of ...
621320Same SubsectorMedium Similarity

Offices of Mental Health Practitioners (except Physicians)

This industry comprises establishments of independent mental health practitioners (except physicians...
621330Same SubsectorMedium Similarity

Offices of Physical, Occupational and Speech Therapists, and Audiologists

This industry comprises establishments of independent health practitioners primarily engaged in one ...
621340Same SubsectorMedium Similarity

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NAICS 621511 FAQ

Frequently Asked Questions

NAICS code 621511 covers Medical Laboratories. This U.S. industry comprises establishments known as medical laboratories primarily engaged in providing analytic or diagnostic services, including body fluid analysis, generally to the medical profession or to the patient on referral from a health practitioner. Illustrative Examples: Blood analysis laboratories Medical pathology laboratories Medical bacteriological laboratories Medical testing laboratories Medical forensic laboratories Cross-References.

Recently Posted in Medical Laboratories

NAICS: 621511
New
Federal
Q301--Semen & Vasectomy Test Kits for HSA 5.3
Solicitation # 36C26226Q1347
This Sources Sought notice is issued by the Department of Veterans Affairs for market research to identify capable contractors for a Blanket Purchase Agreement providing semen analysis and post-vasectomy testing services across Health Service Area 5.3. The scope includes the provision of CLIA-certified and FDA-registered mail-in collection kits, specimen transportation, analytical testing, and the delivery of results via a secure web portal or electronic interface. The contractor must provide logistical support, including temperature-stabilized shipping materials and comprehensive reporting tools for clinicians, while adhering to HIPAA and DOT regulations for biological substance transport. The requirement falls under NAICS code 621511 and is open to all interested parties, with a specific focus on determining the viability of a set-aside for Service-Disabled Veteran-Owned Small Businesses and Veteran-Owned Small Businesses. Interested respondents must submit a capability statement, general pricing, and proof of certification by August 18, 2026. The anticipated period of performance consists of a base year starting October 1, 2026, with four subsequent one-year option periods.
262-NETWORK Contract Office 22 (36C262)

POSTED

1 day ago

DEADLINE

in 5 days
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NAICS: 621511
New
Federal
Non-Personal Clinical Laboratory Scientist ServicesThis subcontract opportunity is for the provision of non-personal clinical laboratory scientist services at the Northern Navajo Medical Center located in Shiprock, New Mexico. The selected provider will be responsible for performing essential diagnostic testing and managing protected health information in strict accordance with HIPAA compliance standards. This requirement is managed by the Navajo Area Indian Health Service under the Department of Health and Human Services. The contract is specifically set aside for Indian Small Business Economic Enterprises under NAICS code 621511. Interested parties must submit their responses by August 20, 2026, following the posting date of August 11, 2026. Performance of these clinical services will take place within the 87420 zip code area.
Navajo Area Indian Health Svc

POSTED

1 day ago

DEADLINE

in 8 days
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NAICS: 621511
New
Federal
Pharmacy Personnel Fingertip Testing Services
Defense Health Agency Hcd West

POSTED

1 day ago

DEADLINE

in 7 days
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NAICS: 621511
New
Federal
BPA for Medical Laboratory Testing Services at 18th Medical Group - Kadena Air Base, Japan
Solicitation # HT941026Q2050
The contract is a Blanket Purchase Agreement (BPA) for Medical Laboratory Testing Services at the 18th Medical Group on Kadena Air Base, Japan, issued under solicitation number HT941026Q2050 by the Defense Health Agency Hcd West, Department of Defense. The BPA has a total ceiling value of $50,000 over its five-year period of performance from October 1, 2026, to September 30, 2031, and is structured as a firm-fixed-price agreement for specific laboratory tests including fungal culture and identification, TSPOT-TB testing, and antifungal drug susceptibility tests. The solicitation is unrestricted and invites full and open competition under NAICS code 621511. Contractors must submit a single PDF quotation that includes a capabilities statement addressing technical requirements from the Statement of Work, a completed Quote Sheet with firm-fixed pricing for each line item, and all required representations and certifications. Past performance and technical capability are critical evaluation factors, with technical capability serving as a mandatory pass/fail gate; failure to meet the technical threshold disqualifies a respondent. The evaluation is conducted on a best value basis with past performance carrying greater weight than price. Quote submissions are due by August 11, 2026, and must be emailed to the point of contact, April Delmendo. Performance is required on-site at the 18th Medical Group Laboratory in Building 626, Room LK08, during business hours of 7:30 a.m. to 4:30 p.m., Monday through Friday, excluding U.S. government holidays. The contractor must handle specimen collection daily within these hours, ensuring each sample includes the date, test name, patient name, and last four digits of the patient’s Social Security Number. The contractor is responsible for maintaining current laboratory accreditation, implementing a safety plan compliant with OSHA and Japan Environmental Governing Standards (JEGS), and ensuring all personnel have the necessary military base access credentials with background screening. Contractor staff must wear visible identification at all times and are prohibited from using retired or reserve military titles. Invoicing and payment will be processed electronically via the Wide Area Workflow system with specific routing and DoDAAC codes assigned. The contractor holds full liability for environmental incidents, property damage, and personnel injury, with mandatory reporting within one hour. The contract incorporates numerous FAR clauses related to cybersecurity, trafficking in persons, small
Defense Health Agency Hcd West

POSTED

1 day ago

DEADLINE

in 13 days
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NAICS: 621511
New
Federal
CLIA-Certified Laboratory Testing Services
262-NETWORK Contract Office 22 (36C262)

POSTED

1 day ago

DEADLINE

in 5 days
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NAICS: 621511
New
International
Laboratory Urinalysis Services (ACAN)
Solicitation # W6369-27-A020
The Department of National Defence is seeking a provider for laboratory urinalysis services to support the Canadian Armed Forces. The contract involves five specific types of drug testing: for Cause, Control, Accident/Incident, Safety Sensitive Drug Testing for high-risk positions, and Blind Drug Testing for statistical analysis. All services must be performed according to the standards set by the Substance Abuse and Mental Health Services Administration Mandatory Guidelines for Workplace Drug Testing Programs, and the provider must be able to provide proof of SAMHSA certification upon request. This solicitation, numbered W6369-27-A020, was posted on August 11, 2026, with a response deadline of August 27, 2026. The services will be performed within Canada, and the primary point of contact for the procurement is Fortuna Sophia Dorgbetor.
Department of National Defence

POSTED

2 days ago

DEADLINE

in 15 days
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NAICS: 621511
New
SLED
Basic Metabolic Panel (BMP) Testing Services
DAS Procurement

POSTED

3 days ago

DEADLINE

in 18 days
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NAICS: 621511
New
SLED
Comprehensive Metabolic Panel (CMP) Testing Services
DAS Procurement

POSTED

3 days ago

DEADLINE

in 18 days
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NAICS: 621511
New
SLED
Full Panel Clinical Laboratory Services (All Listed Tests)
DAS Procurement

POSTED

3 days ago

DEADLINE

in 18 days
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NAICS: 621511
New
SLED
Clinical Laboratory Services for The Nathaniel Witherell
Solicitation # 7967
The Town of Greenwich is soliciting clinical laboratory services for The Nathaniel Witherell, a skilled nursing facility located in Greenwich, Connecticut, under solicitation number 7967. The contract requires a provider to deliver comprehensive laboratory testing services, including phlebotomy and routine and STAT specimen transport, Monday through Friday for standard tests and seven days a week for urgent requests with a maximum four-hour response time. Services must include test requisitions, reference ranges, a dedicated reporting printer, infection control reports, quarterly utilization data, staff education, and 24/7 access to test results via secure internet, with critical values communicated within 60 minutes. The contractor must be licensed by the State of Connecticut, certified under CLIA, accredited by the College of American Pathologists, and fully compliant with HIPAA, HITECH, OSHA Universal Precautions, and accessibility standards under 28 CFR § 35.200. Performance will occur entirely within Greenwich, CT, with all services delivered at The Nathaniel Witherell, and transportation costs are included under FOB destination inside delivery terms. Proposals must be submitted in hard copy—one original and four copies—along with a single flash drive, and must include an executed letter of transmittal, an Insurance Procedure Form, and a Statement of Proposing Company’s Qualifications. Bids are not accepted electronically and must be received by 11:00 AM on August 31, 2026, at the Greenwich Purchasing Department. The evaluation will be based on a trade-off process awarding up to 100 points across five factors: firm’s experience with skilled nursing facilities (30 points), staff expertise (30 points), competitive advantages (20 points), proposal quality (10 points), and operational capability (10 points). No lowest price technically acceptable (LPTA) method will be used. Contractual obligations include strict insurance requirements of $1 million per occurrence for general and auto liability, statutory workers’ compensation, and employer’s liability coverage, with insurers rated A- VII or higher by AM Best and the Town named as an additional insured. The contract prohibits assignment without approval, mandates indemnification in favor of the Town, and binds all parties under Connecticut law, with disputes to be resolved exclusively in the Stamford/Norwalk Superior Court. The agreement is a fixed-price personal services contract with optional years, but no pricing is currently specified in the line items, and no federal FAR clauses apply
DAS Procurement

POSTED

3 days ago

DEADLINE

in 18 days
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NAICS: 621511
New
Federal
Q301--Specialized Laboratory Testing, VA Palo Alto Health Care System
Solicitation # 36C26126Q1110
The Department of Veterans Affairs, through its Network Contracting Office 21, is seeking information from contractors capable of providing specialized laboratory testing services for the VA Palo Alto Health Care System under NAICS code 621511, which has a small business size standard of $41.5 million. This is a sources sought announcement only, not a solicitation, and no obligations or payments are incurred by the government for responses. All submitted information will be used internally to inform potential procurement strategy and is not binding. Responses must be submitted by email to Angela Gerlitzki no later than 10:00 a.m. EST on August 17, 2026, and must include the company’s legal name and SAM Unique Entity Identifier, socioeconomic status including SDVOSB or VOSB certification status verified on the SBA database, a capabilities statement, similar project history, copy of certifications, anticipated teaming or subcontracting plans demonstrating compliance with limitations on subcontracting, GSA contract number if applicable, and a completed price estimate on the attached schedule. Contractors must have an active SAM registration at the time of submission. The anticipated period of performance for any resulting contract would be October 1, 2026, through September 30, 2027. Failure to provide all requested information will render a submission non-responsive. The solicitation number 36C26126Q1110 must be referenced in all correspondence.
261-NETWORK Contract Office 21 (36C261)

POSTED

3 days ago

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in 5 days
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NAICS: 621511
New
Federal
Autoimmune Encephalopathy Testing (CSF)
261-NETWORK Contract Office 21 (36C261)

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