NAICS 621511 - Medical Laboratories

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What is NAICS 621511

NAICS code 621511 covers establishments primarily engaged in providing analytic or diagnostic services through medical laboratories. These businesses perform various tests on body fluids and tissues to support medical diagnosis, treatment, and research. Commonly, these services are utilized by healthcare providers to obtain crucial clinical data for patient care. Medical laboratories within this sector range from general blood analysis labs to specialized pathology and forensic laboratories. Government agencies contract these services to support public health initiatives, epidemiological studies, forensic investigations, and quality assurance in healthcare delivery. The sector plays a vital role in advancing medical science and ensuring accurate diagnostic outcomes, which are critical for effective healthcare management and policy implementation.

Industry Classification for NAICS 621511

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

Breakdown for NAICS 621511

  • Includes establishments primarily engaged in diagnostic and analytic medical testing services.
  • Covers blood analysis, pathology, bacteriological, forensic, and other specialized laboratory services.
  • Supports medical professionals and patients by providing test results based on health practitioner referrals.
  • Subject to specific regulatory and accreditation standards to ensure quality and reliability.
  • Typical clients include healthcare providers, government health agencies, and law enforcement.

Included Activities for NAICS 621511

  • Performing blood and body fluid analyses for diagnostic purposes.
  • Conducting medical pathology examinations on tissue samples.
  • Executing bacteriological and microbiological testing for infectious diseases.
  • Carrying out forensic laboratory analyses for criminal investigations.
  • Providing molecular and genetic testing services.
  • Supporting epidemiological studies with laboratory data.
  • Maintaining laboratory quality control and accreditation compliance.
  • Reporting test results to healthcare providers and government agencies.

Business Types for NAICS 621511

  • Independent medical laboratory service providers
  • Hospital-affiliated diagnostic laboratories
  • Forensic laboratory service contractors
  • Public health laboratory service providers
  • Specialized pathology and microbiology laboratories

Subcategories for NAICS 621511

  • Bacteriological laboratories, diagnostic
  • Bacteriological laboratories, medical
  • Biological laboratories, diagnostic
  • Blood analysis laboratories
  • Cytology health laboratories
  • DNA testing laboratories
  • Forensic laboratories, medical
  • Genetic testing laboratories
  • Laboratories, medical (except radiological, X-ray)
  • Laboratory testing services, medical (except radiological, X-ray)
  • Medical laboratories (except radiological, X-ray)
  • Medical pathology laboratories
  • Mycology health laboratories
  • Parasitology health laboratories
  • Pathological analysis laboratories
  • Pathology laboratories, medical
  • Testing laboratories, medical
  • Toxicology health laboratories
  • Urinalysis laboratories

Government Buyers for NAICS 621511

Government agencies such as the Department of Health and Human Services (HHS), Centers for Disease Control and Prevention (CDC), Department of Veterans Affairs (VA), and state health departments frequently procure medical laboratory services. These agencies rely on diagnostic testing for public health surveillance, disease outbreak response, forensic casework, and veteran healthcare programs. Additionally, federal law enforcement agencies may contract forensic laboratories for criminal investigations. The need for timely, accurate, and reliable laboratory analysis drives government demand, making these services essential for both routine and emergency public health operations.

Contract Types & Procurement for NAICS 621511

Contracts for medical laboratory services commonly include task orders under indefinite delivery/indefinite quantity (IDIQ) contracts, fixed-price contracts, and cost-reimbursement agreements for research-related testing. Competitive bidding and requests for proposals (RFPs) are typical procurement methods, ensuring quality and cost-effectiveness. Contract values vary widely depending on the scope of testing, ranging from small-scale diagnostic service contracts to large multi-year agreements supporting nationwide public health programs. Emergency procurements may also occur during health crises, often requiring rapid mobilization of laboratory resources.

Details for NAICS 621511

Explore the hierarchy and related codes for this industry

NAICS Code Industry Title
621512 Diagnostic Imaging Centers
NAICS Code Industry Title
621 Ambulatory Health Care Services
6211 Offices of Physicians
62111 Offices of Physicians
621111 Offices of Physicians (except Mental Health Specialists)
621112 Offices of Physicians, Mental Health Specialists
6212 Offices of Dentists
62121 Offices of Dentists
621210 Offices of Dentists
6213 Offices of Other Health Practitioners
62131 Offices of Chiropractors
621310 Offices of Chiropractors
62132 Offices of Optometrists
621320 Offices of Optometrists
62133 Offices of Mental Health Practitioners (except Physicians)
621330 Offices of Mental Health Practitioners (except Physicians)
62134 Offices of Physical, Occupational and Speech Therapists, and Audiologists
621340 Offices of Physical, Occupational and Speech Therapists, and Audiologists
62139 Offices of All Other Health Practitioners
621391 Offices of Podiatrists
621399 Offices of All Other Miscellaneous Health Practitioners
6214 Outpatient Care Centers
62141 Family Planning Centers
621410 Family Planning Centers
62142 Outpatient Mental Health and Substance Abuse Centers
621420 Outpatient Mental Health and Substance Abuse Centers
62149 Other Outpatient Care Centers
621491 HMO Medical Centers
621492 Kidney Dialysis Centers
621493 Freestanding Ambulatory Surgical and Emergency Centers
621498 All Other Outpatient Care Centers
6215 Medical and Diagnostic Laboratories
62151 Medical and Diagnostic Laboratories
621511 Current Medical Laboratories
621512 Diagnostic Imaging Centers
6216 Home Health Care Services
62161 Home Health Care Services
621610 Home Health Care Services
6219 Other Ambulatory Health Care Services
62191 Ambulance Services
621910 Ambulance Services
62199 All Other Ambulatory Health Care Services
621991 Blood and Organ Banks
621999 All Other Miscellaneous Ambulatory Health Care Services
622 Hospitals
6221 General Medical and Surgical Hospitals
62211 General Medical and Surgical Hospitals
622110 General Medical and Surgical Hospitals
6222 Psychiatric and Substance Abuse Hospitals
62221 Psychiatric and Substance Abuse Hospitals
622210 Psychiatric and Substance Abuse Hospitals
6223 Specialty (except Psychiatric and Substance Abuse) Hospitals
62231 Specialty (except Psychiatric and Substance Abuse) Hospitals
622310 Specialty (except Psychiatric and Substance Abuse) Hospitals
623 Nursing and Residential Care Facilities
6231 Nursing Care Facilities (Skilled Nursing Facilities)
62311 Nursing Care Facilities (Skilled Nursing Facilities)
623110 Nursing Care Facilities (Skilled Nursing Facilities)
6232 Residential Intellectual and Developmental Disability, Mental Health, and Substance Abuse Facilities
62321 Residential Intellectual and Developmental Disability Facilities
623210 Residential Intellectual and Developmental Disability Facilities
62322 Residential Mental Health and Substance Abuse Facilities
623220 Residential Mental Health and Substance Abuse Facilities
6233 Continuing Care Retirement Communities and Assisted Living Facilities for the Elderly
62331 Continuing Care Retirement Communities and Assisted Living Facilities for the Elderly
623311 Continuing Care Retirement Communities
623312 Assisted Living Facilities for the Elderly
6239 Other Residential Care Facilities
62399 Other Residential Care Facilities
623990 Other Residential Care Facilities
624 Social Assistance
6241 Individual and Family Services
62411 Child and Youth Services
624110 Child and Youth Services
62412 Services for the Elderly and Persons with Disabilities
624120 Services for the Elderly and Persons with Disabilities
62419 Other Individual and Family Services
624190 Other Individual and Family Services
6242 Community Food and Housing, and Emergency and Other Relief Services
62421 Community Food Services
624210 Community Food Services
62422 Community Housing Services
624221 Temporary Shelters
624229 Other Community Housing Services
62423 Emergency and Other Relief Services
624230 Emergency and Other Relief Services
6243 Vocational Rehabilitation Services
62431 Vocational Rehabilitation Services
624310 Vocational Rehabilitation Services
6244 Child Care Services
62441 Child Care Services
624410 Child Care Services

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