NAICS Code 621511 - Medical Laboratories

Government Level - NAICS 6-Digit

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NAICS Code 621511 Description

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.

NAICS Code 621511 - Medical Laboratories is a final level code of the “Medical and Diagnostic Laboratories” Sector. There are 14,706 companies verified as active in this industry in the USA with an estimated employment of 191,404 people.

Industry Sector

Medical and Diagnostic Laboratories

Annual Payroll


Total Revenue


SBA Size Standard

Annual Revenue Limit of $35,000,000

Parent Category - 5-digit Level (less specific)

Industry Examples of NAICS 621511

Common types of examples within NAICS Code 621511 - Medical Laboratories are:

  • 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

Industry Image

Example photo for industry NAICS 621511 - Medical Laboratories . This image represents an activity or product found in this industry.


For some business types, there may be a similar industry to NAICS Code 621511 - Medical Laboratories that is a better classification match. Establishments known as dental laboratories primarily engaged in making dentures, artificial teeth, and orthodontic appliances to prescription are classified in U.S. NAICS Code 339116 - Dental Laboratories; Establishments known as optical laboratories primarily engaged in grinding lenses to prescription are classified in U.S. NAICS Code 339115 - Ophthalmic Goods Manufacturing; Establishments known as orthopedic laboratories primarily engaged in making orthopedic or prosthetic appliances to prescription are classified in U.S. NAICS Code 339113 - Surgical Appliance and Supplies Manufacturing; and Establishments primarily engaged in providing health screening or physical fitness evaluation services (except by offices of health practitioners) are classified in U.S. NAICS Code 621999 - All Other Miscellaneous Ambulatory Health Care Services.

Companies compiles comprehensive business data and executive contact leads for businesses within NAICS Code 621511 - Medical Laboratories . Some of the leading and most notable companies are listed below. To order a list of companies within NAICS Code 621511 - Medical Laboratories for marketing (postal mailing, telemarketing, emailing) or analytics-use, click on the link below to “Buy Business List”. Our data analysts are standing by to assist in your list setup and target marketing.

Industry Executives

Would you like to email executives in NAICS Code 621511 - Medical Laboratories ? Below are some of the common job titles available to be targeted.

  • Business Development
  • Chairman
  • C-Level
  • Director
  • Engineering
  • Executive Director
  • Facilities
  • Finance
  • Human Resource
  • IT
  • Manager
  • Marketing
  • Manufacturing
  • Operations
  • Owner
  • Partner
  • President
  • Principal
  • Purchasing
  • Sales
  • Vice President

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Questions & Answers

  • What is the NAICS Code for Med Labs?

    Medical Laboratories are classified under NAICS Code 621511 - Medical Laboratories. This industry also includes blood analysis labs, biological labs, dna testing labs, genetic testing labs, parasitology labs and toxicology health labs.

  • What is the SBA NAICS 621511 revenue limit?

    Businesses with an annual revenue under $35,000,000 are considered small businesses by SBA.

  • How many active businesses operate in NAICS Code 621511?

    There are 14,706 verified business locations operating primarily in this industry.

  • What was the total revenue for NAICS Code 621511?

    In 2017 the total revenue for Medical Laboratories was $36,443,596,000

  • What was the annual payroll for NAICS Code 621511?

    In 2017 the annual payroll for Medical Laboratories was $11,800,729,000

  • How many people work in NAICS Code 621511?

    The number of reported paid employees is 191,404.