NAICS 2022 nationalIndustry USA Verified: Census NAICS 2022 · 2026-01-01
621511
NAICS 621511 — Medical Laboratories
Medical Laboratories
NAICS 621511 is the national industry code for medical laboratories establishments in the United States. The Small Business Administration sets a size standard of $41.5 for this classification. It forms part of the hierarchical North American Industry Classification System maintained by the Census Bureau.
SBA: $41.5
View full SBA standard
Related industries in 62151 (Medical and Diagnostic Laboratories)
View parent 62151Official 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
Medical Laboratories
Changes to receipts-based standard: [object Object]