# NAICS 621511: Medical Laboratories

The SBA size standard for NAICS 621511 is $41,500,000 in average annual receipts (13 CFR 121.201).

| Field | Value |
| --- | --- |
| Code | 621511 |
| Title | Medical Laboratories |
| Level | 6 |
| Parent | 62151 |
| Size standard | $41,500,000 in average annual receipts |
| Footnote | - |

## Description

This U.S. industry comprises establishments known as medical laboratories primarily engaged in providing analytic or diagnostic services, including body fluid analysis, generally to the medical profession or to the patient on referral from a health practitioner.

## Sources

- Census NAICS: https://www.census.gov/naics/
- SBA size standards: https://www.sba.gov/document/support-table-size-standards

## API and MCP

- REST: GET https://samgovapi.io/api/v1/naics/621511/size-standard?revenue_usd=...
- MCP tools: naics_lookup, size_standard_check

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