NAICS Code 54138 — Testing Laboratories and Services

NAICS Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It contains 1 direct sub-code.

Code	54138
Title	Testing Laboratories and Services
Level	NAICS Industry (5-digit)
Edition	NAICS 2022 edition

Official definition (2022 NAICS)

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.

This national industry shares the official Census description of 541380.

Where 54138 sits in the hierarchy

Level	Code	Title
Sector	54	Professional, Scientific, and Technical Services
Subsector	541	Professional, Scientific, and Technical Services
Industry Group	5413	Architectural, Engineering, and Related Services
NAICS Industry	54138	Testing Laboratories and Services

Codes under 54138

Code	Title
541380	Testing Laboratories and Services

Related NAICS Industry codes

• 54131 — Architectural Services
• 54132 — Landscape Architectural Services
• 54133 — Engineering Services
• 54134 — Drafting Services
• 54135 — Building Inspection Services
• 54136 — Geophysical Surveying and Mapping Services
• 54137 — Surveying and Mapping (except Geophysical) Services

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.