NAICS 2022 nationalIndustry * USA Verified: Census NAICS 2022 · 2026-01-01
541380
NAICS 541380 — Testing Laboratories and Services
Testing Laboratories and Services
NAICS 541380 is the national industry code for testing laboratories and services establishments in the United States. The Small Business Administration sets a size standard of $19.0 for this classification. It forms part of the hierarchical North American Industry Classification System maintained by the Census Bureau.
SBA: $19.0
View full SBA standard
Official Inclusions
- testing of activities in a laboratory or on-site
Exclusions & Cross-References
Activities classified under other official NAICS codes:
- auto emissions testing (See 811199 All other automotive repair and maintenance (CAN))
- dental laboratory, analysis and diagnostic (See 621510 Medical and diagnostic laboratories (CAN))
- performing clinical laboratory testing for the medical profession (See 621510 Medical and diagnostic laboratories (CAN))
- performing laboratory testing for the veterinary profession (See 541940 Veterinary services (US))
- pipeline aerial inspection services (See 541990 All other professional, scientific and technical services)
- pipeline and power line visual inspection services (See 541990 All other professional, scientific and technical services)
Official Illustrative Examples
Primary activities officially recognized by Census Bureau / Statistics Canada:
assaying services automobile proving and testing ground calibration and certification services food testing laboratory forensic laboratories (except medical) hydrostatic testing laboratories non destructive testing services radiation testing services radiographic testing services seed testing laboratories testing laboratory (except medical or dental)
Complete Index of Activities (44 recognized activities) ▼
acoustics testing services
assaying services
automobile proving and testing ground
biological testing (except clinical and veterinary)
calibration and certification services
cannabis quality testing laboratories
drill tool inspection, service
electrical testing laboratory
environmental laboratory testing services
film badge testing services
fire insurance underwriters' laboratories
food testing laboratory
forensic laboratories (except medical)
gas pipeline testing services (except aerial)
gemologist services
geotechnical testing laboratory
hydrostatic testing laboratories
industrial testing laboratories
laboratories, product testing
laboratory testing service (except clinical and veterinary)
mechanical testing, laboratories
metallurgical testing laboratories
non destructive testing services
pipeline and related facilities inspection services (except visual)
police laboratories
pollution testing service (except automotive emissions testing)
pressure testing lines on site, service
product testing services
production equipment inspection service
radiation dosimetry laboratories
radiation testing services
radiographic testing services
radon testing services
recreational watercraft safety inspection
seed testing laboratories
soil testing services
testing laboratory (except medical or dental)
testing of activities in a laboratory or on-site
thermal testing, laboratories
thermography services (testing for heat loss in buildings)
underground utility lines (e.g., telephone, cablevision, hydro), locating on contract
vibration testing services
welding inspection service
X-ray inspection service
Official data
| Feature | Description |
|---|---|
| Official name | North American Industry Classification System (NAICS) 2022 |
| Issuing authority | U.S. Census Bureau with OMB, Statistics Canada, and INEGI |
| Tax authority | Internal Revenue Service (IRS) |
| Purpose | Statistical business classification and federal contracting (SAM.gov, SBA standards) |
| Used in | SAM.gov registration, SBA size determinations, IRS tax classification, SEC EDGAR (via SIC crosswalk) |
| Active since | 2022 (current edition) |
| Hierarchy level | Sector (2-digit) |
| Source | https://www.census.gov/naics/ |
NAICS hierarchy path
Trace the classification from the broadest sector down to this national industry code.
Cross-references & crosswalks
SBA size standard description
Testing Laboratories and Services
Changes to receipts-based standard: [object Object]