541380 — Testing Laboratories and Services
Description
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 (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 8734 - Testing Laboratories (via SIC1987:8734→NAICS1997:54138→2002:541380→2007:541380→2012:541380→2017:541380→2022:541380)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC Q301 — Reference Laboratory Testing
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 541380 valid in 2022? ▾
Yes, 541380 is a valid 6-digit 2022 NAICS national industry code representing 'Testing Laboratories and Services' under Sector 54 in the official classification index.
What is the SBA size standard for NAICS code 541380? ▾
The Small Business Administration (SBA) has established a small business size standard of $19,000,000 for NAICS code 541380 (Testing Laboratories and Services), calculated based on receipts.
What is the legacy SIC equivalent for NAICS 541380? ▾
According to official Census Bureau concordance tables, NAICS code 541380 (Testing Laboratories and Services) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 8734 - Testing Laboratories.
Related Pages & Tools
Further regulatory reference links for NAICS code 541380:
- Sector 54 Directory Hub — List of related industries in the Professional, Scientific, and Technical Services sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 541380 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Testing Laboratories and Services).
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.