2017 NAICS Definition

T = Canadian, Mexican, and United States industries are comparable.

541380 Testing Laboratories

This industry comprises establishments primarily engaged in performing physical, chemical, and other analytical testing services, such as acoustics or vibration testing, assaying, biological testing (except medical and veterinary), calibration testing, electrical and electronic testing, geotechnical testing, mechanical testing, nondestructive testing, or thermal testing. The testing may occur in a laboratory or on-site.

Cross-References. Establishments primarily engaged in--

• Laboratory testing for the medical profession--are classified in Industry 62151, Medical and Diagnostic Laboratories;
• Veterinary testing services--are classified in Industry 541940, Veterinary Services; and
• Auto emissions testing--are classified in U.S. Industry 811198, All Other Automotive Repair and Maintenance.

2007 NAICS		2012 NAICS		2017 NAICS		Corresponding Index Entries
541380		541380		541380		Acoustics testing laboratories or services
541380		541380		541380		Assaying services
541380		541380		541380		Automobile proving and testing grounds
541380		541380		541380		Biological (except medical, veterinary) testing laboratories or services
541380		541380		541380		Calibration and certification testing laboratories or services
541380		541380		541380		Electrical testing laboratories or services
541380		541380		541380		Electronic testing laboratories or services
541380		541380		541380		Environmental testing laboratories or services
541380		541380		541380		Film badge testing (i.e., radiation testing) laboratories or services
541380		541380		541380		Fire insurance underwriters' laboratories
541380		541380		541380		Food testing laboratories or services
541380		541380		541380		Forensic (except medical) laboratories or services
541380		541380		541380		Geotechnical testing laboratories or services
541380		541380		541380		Hydrostatic testing laboratories or services
541380		541380		541380		Industrial testing laboratories or services
541380		541380		541380		Laboratory testing (except medical, veterinary) services
541380		541380		541380		Mechanical testing laboratories or services
541380		541380		541380		Metallurgical testing laboratories or services
541380		541380		541380		Nondestructive testing laboratories or services
541380		541380		541380		Pollution testing (except automotive emissions testing) services
541380		541380		541380		Product testing laboratories or services
541380		541380		541380		Radiation dosimetry (i.e., radiation testing) laboratories or services
541380		541380		541380		Radiation testing laboratories or services
541380		541380		541380		Radiographic testing laboratories or services
541380		541380		541380		Radiographing welded joints on pipes and fittings
541380		541380		541380		Radiography inspection services
541380		541380		541380		Radon testing laboratories or services
541380		541380		541380		Seed testing laboratories or services
541380		541380		541380		Soil testing laboratories or services
541380		541380		541380		Testing laboratories (except medical, veterinary)
541380		541380		541380		Thermal testing laboratories or services
541380		541380		541380		Vibration testing laboratories or services
541380		541380		541380		X-ray inspection services