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Companion Diagnostics Market is is expected to Hit US$ 22.47 Billion by 2033 | Major Companies - Agilent Technologies, Inc., Qiagen N.V., Abbott Laboratories, Inc., Siemens Healthcare
Companion Diagnostics Market 2026
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The Global Companion Diagnostics Market size reached US$ 9.84 Billion in 2025 and is expected to reach US$ 22.47 Billion by 2033, growing at a CAGR of 12.6% during the forecast period 2025-2033.
The Companion Diagnostics Market refers to the industry focused on developing and commercializing diagnostic tests that identify patients likely to benefit from specific targeted therapies or biologic drugs. These tests are used alongside pharmaceutical products to ensure safety, efficacy, and personalized treatment decisions. The market includes assays, genetic tests, imaging tools, and molecular diagnostics. It is driven by precision medicine, oncology applications, regulatory approvals, and drug-diagnostic collaborations across healthcare and pharmaceutical sectors. It supports personalized healthcare and treatment optimization globally worldwide.
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Recent Industry Developments: United States
✅ April 2026: Labcorp launches nationwide KEYTRUDA companion diagnostic access
Labcorp initiated nationwide availability of an FDA-approved PD-L1 companion diagnostic, enabling faster identification of ovarian cancer patients eligible for KEYTRUDA-based therapy. This improved real-world accessibility of CDx testing across U.S. oncology networks and diagnostic labs.
✅ February 2026: Agilent PD-L1 22C3 pharmDx expands KEYTRUDA testing
Agilent received FDA approval for expanded use of its PD-L1 IHC 22C3 pharmDx test to identify patients with epithelial ovarian, fallopian tube, and primary peritoneal carcinoma who may benefit from pembrolizumab (KEYTRUDA). This reinforced the role of immunohistochemistry-based CDx in immuno-oncology decision-making.
✅ January 2026: FDA expands Guardant360 CDx in colorectal cancer
The U.S. FDA approved Guardant360 CDx as a companion diagnostic for identifying BRAF V600E-mutant metastatic colorectal cancer patients eligible for targeted therapy (encorafenib + cetuximab combination). This marked a major expansion of liquid biopsy-based companion diagnostics in solid tumors, strengthening precision oncology adoption.
Recent Industry Developments: Japan
✅ March 2026: Increased approval momentum for regenerative + diagnostic-linked therapies
Japan accelerated approvals for advanced therapies (including regenerative medicine and oncology drugs) with linked diagnostic requirements, reinforcing the co-development model of drug + companion diagnostic systems, particularly in precision oncology and cell therapy pipelines.
✅ February 2026: Expansion of PD-L1 companion diagnostics in oncology
Japan saw expanded clinical and regulatory adoption of PD-L1-based companion diagnostics to support immunotherapy eligibility decisions (including KEYTRUDA-linked testing) across multiple cancer types such as ovarian and other solid tumors. This improved biomarker-driven treatment selection in hospital settings.
✅ January 2026: Japan strengthens precision oncology CDx integration
Japan advanced regulatory alignment for companion diagnostics tied to targeted therapies, especially in oncology, with increased focus on genomic and biomarker-based approvals supporting rare and cancer indications. This reflects Japan's broader push to expand personalized medicine under PMDA oversight.
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List of the Key Players in the Companion Diagnostics Market:
F. Hoffmann-La Roche Ltd.
Agilent Technologies, Inc.
Qiagen N.V.
Thermo Fisher Scientific, Inc.
Abbott Laboratories, Inc.
Biomerieux SA
Siemens Healthcare
Thermo Fisher Scientific Inc.
Danaher Corporation (Beckman Coulter Inc.)
Guardant Health
Illumina Inc.
How Does Market Research Work in the Companion Diagnostics Market?
Market research for the Companion Diagnostics Market involves systematic data collection and analysis to understand industry trends, customer behavior, and competitive dynamics. It includes primary research such as surveys and interviews, and secondary research from reports, databases, and publications. Analysts evaluate market size, growth drivers, challenges, and opportunities using qualitative and quantitative methods. Insights are validated through expert opinions and forecasting models, enabling businesses to make strategic decisions, identify target segments, and gain a competitive advantage in a rapidly evolving market.
Latest Mergers and Acquisitions of Companion Diagnostics Market:
✅ May 2026: Roche Acquires PathAI (AI-powered digital pathology for CDx)
➠ Swiss diagnostics giant F. Hoffmann-La Roche Ltd. agreed to acquire PathAI, a U.S.-based AI digital pathology company.
➠ Deal value: $750 million upfront + up to $300 million milestones.
➠ Strengthens Roche's companion diagnostics algorithms, AI-enabled pathology, and precision oncology testing.
➠ Expands automation in CDx development workflows and cancer biomarker interpretation.
➠ PathAI had an existing partnership with Roche focused on AI-driven CDx development.
✅ March 2026: Agilent Technologies Acquires Biocare Medical (Tissue diagnostics expansion)
➠ Agilent Technologies Inc. acquired Biocare Medical for $950 million (all-cash deal).
➠ Focus: expansion of tissue-based diagnostics used in oncology companion diagnostic workflows.
➠ Adds 300+ antibodies and staining platforms, strengthening pathology testing capabilities.
➠ Improves Agilent's positioning against Roche and Danaher in cancer diagnostic ecosystems supporting CDx development.
✅ February 2026: Danaher Expands Diagnostics Portfolio via Masimo Acquisition (Indirect CDx ecosystem impact)
➠ Danaher Corporation announced acquisition of Masimo for $9.9 billion.
➠ While primarily focused on patient monitoring, it strengthens Danaher's diagnostics and healthcare data infrastructure ecosystem.
➠ Supports broader precision medicine and diagnostics integration, which indirectly reinforces CDx platforms and clinical decision systems used alongside companion diagnostics.
Segments Covered in the Companion Diagnostics Market 2026:
By Product & Services: Assays, Kits & Reagents, Software & Services.
By Technology: Immunohistochemistry (IHC), Polymerase Chain Reaction (PCR), In-situ Hybridization (ISH), Next-Generation Sequencing, Others.
By Indication: Cardiovascular, Neurological Diseases, Cancer, Inflammation and Autoimmune Diseases, Others.
By End-User: Pharmaceutical and Biopharmaceutical Companies, Contract Research Organizations, Others.
Regional Analysis of the Companion Diagnostics Market:
⇥ North America: Leads the market due to advanced infrastructure, strong R&D investments, and early adoption of new technologies.
⇥ Europe: Shows steady growth supported by strict regulations and increasing focus on sustainability initiatives.
⇥ Asia-Pacific: Fastest-growing region driven by rapid industrialization, urbanization, and rising consumer demand in emerging economies.
⇥ Latin America: Experiences moderate growth with expansion in industrial and commercial sectors.
⇥ Middle East & Africa: Gradual market growth supported by increasing investments and improving economic conditions.
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⏩ Accurate Forecasting: Access reliable future projections to support long-term planning.
⏩ Competitive Analysis: Identify key players, strategies, and positioning in the market.
⏩ Data-Driven Decisions: Make informed business choices backed by verified data.
⏩ Opportunity Identification: Discover emerging trends and untapped growth areas.
⏩ Risk Mitigation: Reduce uncertainties with thorough market evaluation.
⏩ Customer Insights: Understand consumer behavior, preferences, and buying patterns.
⏩ Strategic Planning Support: Align business strategies with market realities.
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People Also Ask:
◆ How big is the Companion Diagnostics Market in 2025?
◆ What is the projected growth rate of the Companion Diagnostics Market through 2033?
◆ Who are the key players in the Companion Diagnostics Market?
◆ Which region is expected to dominate the industry during the forecast period?
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