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.
Overview Facts
| NAICS Code | 541380 |
|---|---|
| Industry Title | Testing Laboratories and Services |
| SBA Size Standard | $19,000,000 |
| IRS PBA Code | 541380 (exact match) |
| Sectors Hierarchy | Sector 54 → 541 → 5413 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
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)
Related Resources & Compliance Guides
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.
- 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.
Related Industries in 5413
Frequently Asked Questions (FAQ)
Is 541380 a valid 2022 NAICS code?
NAICS 541380 is 'Testing Laboratories and Services', a 2022 U.S. national industry under Sector 54 (Professional, Scientific, and Technical Services); the SBA small-business size standard is $19,000,000.
What is the SBA size standard for NAICS 541380?
The SBA small business size standard for NAICS 541380 is $19,000,000 (based on receipts).
What is the legacy SIC code mapping for 541380?
NAICS code 541380 maps to the legacy 1987 SIC codes: 8734 - Testing Laboratories.