NAICS 621511

What is the NAICS code 621511?

The NAICS code 621511 is applied to those industries related to 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

Therefore, all companies engaged in any industrial activity related to this type of business are grouped under category 621511 in the North American Industry Classification System.

This industrial activity of NAICS code is structured as follows:

  • 62 - Health Care and Social Assistance
  • 621 - Ambulatory Health Care Services
  • 6215 - Medical and Diagnostic Laboratories
  • 62151 - Medical and Diagnostic Laboratories
  • 621511 - Medical Laboratories

Characteristics of the North American Industry Classification System code 621511


This code is only used in the North American Industry Classification System (NAICS). It´s to say, it is not used in the North American Free Trade Agreement (NAFTA): United States, Canada, and Mexico.

Related codes

The NAICS industry 621511 has the following cross-references:

  • Establishments known as dental laboratories primarily engaged in making dentures, artificial teeth, and orthodontic appliances to prescription are classified in U.S. Industry 339116, Dental Laboratories.
  • Establishments known as optical laboratories primarily engaged in grinding lenses to prescription are classified in U.S. Industry 339115, Ophthalmic Goods Manufacturing.
  • Establishments known as orthopedic laboratories primarily engaged in making orthopedic or prosthetic appliances to prescription are classified in U.S. Industry 339113, Surgical Appliance and Supplies Manufacturing.
  • Establishments primarily engaged in providing health screening or physical fitness evaluation services (except by offices of health practitioners) are classified in U.S. Industry 621999, All Other Miscellaneous Ambulatory Health Care Services.

Related activities

Below are some of the most common types of activities in the Medical Laboratories industry (NAICS Code 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

NAICS 621511

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