# NAICS 541380: Testing Laboratories and Services

Breadcrumb: [NAICS codes](https://bidrover.com/naics) › [541380 Testing Laboratories and Services](https://bidrover.com/naics/541380)

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.

- NAICS code: 541380
- Title: Testing Laboratories and Services
- Sector: 54 Professional, Scientific, and Technical Services
- Subsector: 541 Professional, Scientific, and Technical Services
- Industry group: 5413 Architectural, Engineering, and Related Services
- SBA size standard: $19 million average annual receipts
- Open bids on BidRover: 1
- Updated: Oct 23, 2026

## Open bids (1)

- [DETROIT JCC-2026-40 BACKFLOW PREVENTER TESTING, MAINTENANCE & INSPECTION](https://bidrover.com/bids/detroit-jcc-2026-40-backflow-preventer-testing-maintenance-and-inspection--2a5ed151-d815-4058-8590-b2152bbf07f4) — Construction & facilities · Michigan, United States · due 2027-05-31

## Frequently asked questions

### What is NAICS code 541380?

NAICS 541380 is "Testing Laboratories and Services" in the 2022 North American Industry Classification System, in sector 54 (Professional, Scientific, and Technical Services). 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.

### What is the SBA size standard for NAICS 541380?

A business is small under NAICS 541380 at or below $19 million average annual receipts, including affiliates (13 CFR 121.201). Confirm the standard named in each solicitation.

### How many government bids are open under NAICS 541380?

BidRover counts 1 open bid that cite NAICS 541380 as of Oct 23, 2026, refreshed every hour from official public sources. Many state and local notices do not list a NAICS code, so search by keyword too.

### How do I get alerts for NAICS 541380 bids?

Save an alert on this page. A free account gets new matching bids by weekly email; the Team plan ($19/mo) sends daily alerts with match scores, the buyer, source link and documents.

## Related NAICS codes

- [541940 Veterinary Services](https://bidrover.com/naics/541940)
- [811198 All Other Automotive Repair and Maintenance](https://bidrover.com/naics/811198)
- [541310 Architectural Services](https://bidrover.com/naics/541310)
- [541320 Landscape Architectural Services](https://bidrover.com/naics/541320)
- [541330 Engineering Services](https://bidrover.com/naics/541330)
- [541340 Drafting Services](https://bidrover.com/naics/541340)
- [541350 Building Inspection Services](https://bidrover.com/naics/541350)
- [541360 Geophysical Surveying and Mapping Services](https://bidrover.com/naics/541360)

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Code titles and definitions: U.S. Census Bureau, North American Industry Classification System (NAICS), 2022 (https://www.census.gov/naics/). Size standards: U.S. Small Business Administration, Small Business Size Standards, 13 CFR 121.201, eCFR text current as of 2026-10-21 (https://www.ecfr.gov/current/title-13/section-121.201).

BidRover lists bids from official public sources. It is not an issuing authority; confirm the NAICS code and size standard named in each solicitation.