Federal NAICS Codes

NAICS 621511: Medical Laboratories

Explore obligations, trends, recent awards, and incumbent contractors for NAICS 621511.

NAICS 621511 federal market metrics

Total obligations
$11.1B
Total awards
36,181 awards
Active obligations
$654.4M
Size standard
$41,500,000 receipts

What this NAICS covers

NAICS 621511 covers outpatient and independent medical laboratory services that perform clinical testing, specimen analysis, laboratory processing, assay validation, quality control, and reporting of diagnostic test results to healthcare providers.

Federal opportunities under 621511 typically involve contracting laboratory capacity to process clinical specimens, deliver validated diagnostic test results, maintain chain-of-custody and quality records, meet turnaround-time requirements, and provide electronic result transmission to clinical or public health programs.

FY2025 snapshot

Obligations
$455.7M
Awards
1,410
Average award
$323.2K
Change from FY2024
+9%

Recent awards

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FAQ

What work fits NAICS 621511?
  • Clinical chemistry panels for screening and monitoring with validated assays and electronic laboratory reports to ordering providers.
  • Microbiology culture and sensitivity testing with organism identification reports and antimicrobial susceptibility data delivered in structured formats.
  • Molecular PCR testing for targeted pathogens with assay validation documentation, contamination controls, and per-sample reporting.
  • Toxicology and drug-screening panels with chain-of-custody documentation, confirmatory testing, and laboratory result certificates.
When is NAICS 621511 a weak fit?
  • Point-of-care rapid tests administered and read at bedside without centralized laboratory processing: missing centralized instrumentation, assay validation, and laboratory-quality control documentation.
  • Environmental testing laboratories analyzing soil or water samples under environmental accreditation: missing clinical specimen certification and clinical result reporting formats.
  • Research laboratories developing novel assays without validated clinical reporting and accreditation: missing certified diagnostic reporting, proficiency testing, and required turnaround SLAs.
What solicitation language points to NAICS 621511?
  • Solicitation requires current laboratory accreditation or certification and requests copies of certificates and proficiency-testing records.
  • Deliverables specify electronic laboratory reporting in HL7 or other structured formats, chain-of-custody forms, and per-sample turnaround-time commitments.
  • Evaluation includes submission of assay validation documents, instrument calibration logs, and biosafety or specimen-handling compliance records.

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