325413 — In-Vitro Diagnostic Substance Manufacturing
Description
This U.S. industry comprises establishments primarily engaged in manufacturing in-vitro (i.e., not taken internally) diagnostic substances, such as chemical, biological, or radioactive substances. The substances are used for diagnostic tests that are performed in test tubes, petri dishes, machines, and other diagnostic test-type devices (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Exclusions & Cross-References
- Establishments primarily engaged in manufacturing in-vivo diagnostic substances are classified in U.S. Industry
- 325412, Pharmaceutical Preparation Manufacturing.
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 2835 - In Vitro and In Vivo Diagnostic Substances (via SIC1987:2835→NAICS1997:325413→2002:325413→2007:325413→2012:325413→2017:325413→2022:325413)
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 3650 — Chemical and Pharmaceutical Products Manufacturing Machinery
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 325413 valid in 2022? ▾
Yes, 325413 is a valid 6-digit 2022 NAICS national industry code representing 'In-Vitro Diagnostic Substance Manufacturing' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 325413? ▾
The Small Business Administration (SBA) has established a small business size standard of 1,250 employees for NAICS code 325413 (In-Vitro Diagnostic Substance Manufacturing), calculated based on employees.
What is the legacy SIC equivalent for NAICS 325413? ▾
According to official Census Bureau concordance tables, NAICS code 325413 (In-Vitro Diagnostic Substance Manufacturing) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 2835 - In Vitro and In Vivo Diagnostic Substances.
Related Pages & Tools
Further regulatory reference links for NAICS code 325413:
- Sector 31-33 Directory Hub — List of related industries in the Manufacturing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 325413 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (In-Vitro Diagnostic Substance Manufacturing).
- 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.