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NAICS 621511, industry

NAICS 621511: Medical laboratories

NAICS 621511 is the industry code for medical laboratories. Use it on loan applications, tax forms and registrations. Explore financing for medical and dental and start your application when you are ready.

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What 621511 covers

Medical laboratories analyze blood, tissue and other specimens from patients for diagnosis and treatment, usually on referral from physicians. Reference labs, toxicology labs, pathology labs and genetic testing labs fit here.

Included in this code

  • Clinical reference laboratories
  • Toxicology labs
  • Pathology laboratories
  • Genetic and molecular testing labs
  • Blood draw and patient service centers

Not this code

Businesses that use 621511

Clinical reference labToxicology labMolecular diagnostics lab

Financing for this trade

Medical labs finance analyzers and sequencers with equipment loans and leases, use receivables financing against insurance and Medicare claims, and SBA 7(a) loans. Lenders look at CLIA and CAP status, payer contracts, reimbursement rates and billing compliance.

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Is 621511 the right code for a medical or clinical laboratory?

Yes, if you test patient specimens for physicians and healthcare providers. Toxicology, pathology and molecular diagnostic labs belong here. If you test products, soil or water for businesses, use 541380. Imaging centers use 621512. Patient service centers that draw blood for a lab also fit under 621511, along with genetic testing labs serving physicians.

What is the SBA size standard for 621511?

SBA sets the size standard for 621511 at $41.5 million in average annual receipts, averaged over the last five completed fiscal years and counting affiliates. Medical laboratories at or under that figure qualify as small businesses for SBA 7(a) and 504 loans and for federal small business set asides. Most independent medical laboratories fall well inside the limit, so size is rarely what decides an SBA application.

How do clinical labs finance analyzers?

Most finance chemistry analyzers, PCR systems and sequencers through equipment loans, leases or reagent rental agreements, and use receivables financing to bridge insurer payments. Lenders look at CLIA certification, payer contracts, reimbursement trends and billing practices. Reagent rental deals can lower upfront costs.

What does NAICS 621511 cover?

Medical laboratories. Industry level code in NAICS 2022, under 62 Health care and social assistance, 621 Ambulatory health care services, 6215 Medical and diagnostic laboratories, 62151 Medical and diagnostic laboratories.

What financing do NAICS 621511 businesses use?

Equipment financing, working capital, SBA loans and invoice factoring are the products placed most for medical and dental businesses. Start an application and the AI matches the deal to lenders that fund this code.

Where do I put NAICS 621511?

On the SBA loan application, on federal Schedule C or Form 1120, on SAM.gov and state registrations, and on most lender applications. A business can report more than one code; use this one if it describes what produces most of your revenue.