Immunoassays - Market Share Analysis, Industry Trends & Statistics, Growth Forecasts (2026-2031)

The immunoassays market size was valued at USD 35.61 billion in 2025 and estimated to grow from USD 37.37 billion in 2026 to reach USD 47.54 billion by 2031, at a CAGR of 4.93% during the forecast period (2026-2031). This report is Segmented by Product & Service (Reagents & Kits, Analyzers & Instruments, and More), Technology (ELISA, CLIA, and More), Application (Infectious Diseases, Oncology, and More), Specimen Type (Blood & Serum, Saliva, and More), End User (Hospitals, Clinical Laboratories, and More), and Geography (North America, Europe, Asia-Pacific, and More). The Market Forecasts are Provided in Terms of Value (USD).

Global Immunoassays Market Trends and Insights

Rising Prevalence of Chronic & Infectious Diseases

Escalating cancer, cardiovascular, and infectious-disease burdens continue to redefine testing volumes worldwide. Multi-parameter panels that combine circulating tumor DNA with traditional protein biomarkers are improving early diagnosis and therapy selection, as evidenced by research identifying CA724, ferritin, and β2-microglobulin as thoracic cancer indicators. Cardiometabolic care has embraced advanced lipoprotein (a) assays, with Roche’s Tina-quant test delivering the first molar-based Lp (a) measurement cleared by the FDA. Communicable-disease surveillance, supported by WHO quality-assurance networks, further accelerates reagent consumption and instrument installations.

Rapid Technological Advances in High-Throughput Analyzers

Automation and machine learning now underpin daily laboratory workflows. The Mayo Clinic’s AI model for kidney-stone spectral analysis cut per-sample review time while preserving accuracy. CLIA platforms from Revvity deliver 60 tests per hour with 48-minute turnaround and monoclonal antibody specificity, a combination essential for precision oncology and endocrinology. Microfluidic biosensors integrate fluid control and optical detection on a single chip, shrinking assay footprints and permitting true walk-away operation.

Stringent Multi-Jurisdictional Regulatory Approvals

Developers face divergent evidence expectations across the FDA, European IVDR, and multiple Asian frameworks, inflating timelines and budgets. Companion diagnostics add layers of inter-agency coordination, while guidance for AI-enabled or multiplex assays remains fragmented. Lack of global harmonization compels parallel validation studies and onsite audits, draining resources from R&D pipelines and product launches.

Other drivers and restraints analyzed in the detailed report include:

• Expansion of Point-of-Care/Home-Based Rapid Tests
• Government-Funded Global Surveillance & Immunization Programs
• High Capital Cost of Multiplex & Automated Systems

Segment Analysis

Reagents and kits generated USD 22.71 billion in revenue in 2025, translating into the single largest slice of the immunoassays market and providing predictable, recurring income streams for suppliers. Volume growth comes from routine infectious-disease panels, chronic-disease monitoring, and expanding global surveillance programs that require validated, lot-consistent consumables. Reagent interoperability across multiple analyzer platforms is increasingly important, prompting manufacturers to invest in universal chemistries and CE-marked bulk packs that support lean-lab initiatives.

Analyzers and instruments, the fastest-expanding category at a 5.26% CAGR, reflect laboratory moves toward full automation and high-throughput operations. AI-enabled scheduling modules now optimize run order and maintenance cycles, easing technician shortages. Meanwhile, middleware connects immunoassay data with LIS and hospital EHRs, driving integrated clinical decision support. As a result, the immunoassays market size for instruments is projected to rise from USD 8.01 billion in 2026 to USD 10.35 billion in 2031.

ELISA occupied 54.87% revenue share in 2025, anchored by standardized protocols, low consumable cost, and decades of accumulated performance evidence. Academic and community laboratories alike continue to rely on ELISA for cytokine panels, endocrine markers, and autoimmune screening, sustaining strong base demand. Yet sensitivity ceilings and relatively long incubation times limit ELISA’s suitability for emerging ultra-low-analyte applications.

Chemiluminescence immunoassays, growing at a 5.33% CAGR, offer higher analytical sensitivity and wider dynamic range, making them the method of choice for therapeutic drug monitoring and tumor-marker quantific ation. Multiplex microarray platforms add throughput by simultaneously detecting dozens of analytes, a capability now indispensable in translational oncology programs. Consequently, the immunoassays market share commanded by CLIA is forecast to climb toward 29.30% by decade-end, even as ELISA retains a sizeable installed base.

Complete Report Scope:

• By Product & Service
  • Reagents & Kits
  • Analyzers & Instruments
  • Software & Services
• By Technology
  • Enzyme-Linked Immunosorbent Assay (ELISA)
  • Chemiluminescence Immunoassay (CLIA)
  • Fluorescence Immunoassay (FIA)
  • Radioimmunoassay (RIA)
  • Lateral Flow Immunoassay (LFIA)
  • Multiplex & Microarray Immunoassays
  • Others (Western Blot, Immuno-PCR)
• By Application
  • Infectious Diseases
  • Oncology
  • Cardiology
  • Endocrinology
  • Autoimmune Disorders
  • Therapeutic Drug Monitoring
  • Drug Discovery & Development
  • Others
• By Specimen Type
  • Blood & Serum
  • Saliva
  • Urine
  • Other Body Fluids
• By End User
  • Hospitals
  • Clinical Laboratories
  • Pharmaceutical & Biotechnology Companies
  • Academic & Research Institutes
  • Point-of-Care / Home-Care Settings
  • Others
• Geography
  • North America
    • United States
    • Canada
    • Mexico
  • Europe
    • Germany
    • United Kingdom
    • France
    • Italy
    • Spain
    • Rest of Europe
  • Asia-pacific
    • China
    • Japan
    • India
    • South Korea
    • Australia
    • Rest of Asia-pacific
  • Middle East and Africa
    • GCC
    • South Africa
    • Rest of Middle East and Africa
  • South America
    • Brazil
    • Argentina
    • Rest of South America

Geography Analysis

North America maintained 40.75% revenue share in 2025, supported by strong reimbursement frameworks, NIH funding, and rapid FDA review pathways for breakthrough diagnostics. Recent clearances such as Roche’s B-cell lymphoma assay illustrate the region’s innovation cadence. Collaboration between Biogen, Beckman Coulter, and Fujirebio on Alzheimer’s markers further demonstrates the value placed on immunoassay-based companion diagnostics. The United States continues to replace aging analyzers with fully automated lines integrating sample prep, while Canada emphasizes universal access and Mexico channels public-sector tenders toward high-sensitivity infectious-disease platforms.

Asia-Pacific is the fastest-growing region at 5.45% CAGR through 2031. China’s Made-in-China 2025 plan accelerates diagnostic self-sufficiency, with Chemclin’s automated systems moving from pilot to national rollout. India’s organized diagnostics sector is expanding beyond metropolitan hubs into tier-3 and tier-4 cities, aided by wellness packages and price transparency. Japan incentivizes regenerative-medicine and oncology companion tests via fast-track approval programs, while South Korea supports start-ups through tax credits and hospital test beds. Southeast Asian nations benefit from multilateral funding aimed at tuberculosis and dengue surveillance, creating first-time buyer opportunities for bench-top platforms.

Europe remains a major revenue contributor, although IVDR transition challenges extend launch timelines. Germany and France anchor centralized testing demand, the United Kingdom prioritizes early cancer detection via NHS funding, and Spain expands point-of-care programs in primary-care clinics. Meanwhile, the Middle East and Africa, though smaller today, show double-digit test-volume growth thanks to Gulf state hospital construction and African CDC procurement initiatives. South America leverages Brazil’s unified health-service upgrades to expand neonatal and prenatal screening, while Argentina pushes for local reagent production amid import restrictions.

List of Companies Covered in this Report:

• Abbott Laboratories
• Roche
• Siemens Healthineers
• Danaher
• Thermo Fisher Scientific
• Beckton Dickinson
• Bio-Rad Laboratories
• Hologic
• Luminex
• QIAGEN
• Sysmex
• Agilent Technologies
• PerkinElmer
• bioMérieux
• DiaSorin
• Ortho Clinical Diagnostics
• Tosoh
• Mindray
• Merck
• QuidelOrtho

Additional Benefits:

• The market estimate (ME) sheet in Excel format
• 3 months of analyst support