Best Diversified Diagnostics Companies in California, United States
The 111 best Diversified Diagnostics companies in California, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Millenium Health Systems.
Ranked: Best Diversified Diagnostics companies in California
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Millenium Health Systems Drug testing laboratory empowering clinicians with comprehensive data insights for patient care | $196M | 190 mo ago | 484 | — | WordPressApple iCloud MailMySQL+24 | — | — |
| 2 | QuidelOrtho Provider of diagnostic healthcare products, ranging from home to hospital use | $69M | 53 mo ago | 7,000 | Douglas Bryant CEO | Adobe Experience ManagerJavaBootstrap+18 | — | 1 job opening |
| 3 | Nodality Discovers and develops personal diagnostics | $49M | 178 mo ago | 25 | David Parkinson President and CEO | — | 145 patents Immunodiagnostic assays and immunomodulatory therapeutics targeting JAK/STAT pathways | — |
| 4 | ONTERA Provider of a range of diagnostic devices based on nanopore technology | $45M | 70 mo ago | 37 | — | — | 55 patents Nanopore-based detection and quantification of nucleic acid sequences and variants | — |
| 5 | Celerus Diagnostics Singapore Togel results, data, and prize information provider | $27M | 177 mo ago | 11 | — | — | 29 patents Automated rapid immunohistochemistry using advanced fluidic and heating technologies | — |
| 6 | Cholestech Point-of-care diagnostic solutions for lipid, cholesterol, and glucose testing | $24M | 424 mo ago | 73 | — | — | 48 patents Point‑of‑care lipid and cholesterol immunoassay cassettes for serum analysis | — |
| 7 | Chronus Health Provider of Healthcare diagnosis services | $24M | 53 mo ago | 21 | Ashish Jagtiani Co-Founder and CTO | — | — | — |
| 8 | ProciseDx Provider of a point-of-care clinical diagnosis device for healthcare professionals | $22M | 59 mo ago | 25 | — | — | 36 patents Immunoassay diagnostics for vascular biomarkers, therapeutic antibodies, and viral antibodies. | — |
| 9 | Navigenics Premier online platform for live sports streaming, news, and analysis | $18M | 196 mo ago | — | Dietrich Stephan Co-Founder | — | 43 patents Personalized genetic risk assessment and actionable health decision-support systems. | — |
| 10 | Curve Biosciences Provider of manufacturing diagnostic kits for multiple therapeutic areas | $18M | 7 mo ago | 10 | Chuba Oyolu Co-Founder & CTO | — | — | 1 launch |
| 11 | Nexus Dx Global provider of near-patient testing systems and advanced diagnostic solutions | $15M | 200 mo ago | 24 | Nam Shin President & Chief Executive Officer | — | 121 patents Microfluidic point‑of‑care diagnostic platforms integrating thin‑film centrifugation and ELISA assays | — |
| 12 | ReaMetrix In Vitro diagnostics platform | $11M | 198 mo ago | 3 | Bala S Manian Founder & CEO | — | 47 patents Optical biosensing and porous planar cell capture for viable microorganism detection | — |
| 13 | MEC Dynamics Corp Point-of-care blood testing for chronic disease diagnosis | $10M | 157 mo ago | — | — | — | 27 patents Patents concentrated in computing, sensing & instrumentation | — |
| 14 | iSense Advanced sensors for chemical detection in liquids and vapors | $8M | 105 mo ago | — | Paul Rhodes CEO | — | 177 patents Minimally invasive insertion of nucleophilic chemical sensor arrays for continuous physiological monitoring. | — |
| 15 | Enable Biosciences Predictive medicine tools for early disease detection and improved healthcare | $5M | 30 mo ago | 14 | David Seftel Md CEO / CFO / CMO | Cart FunctionalitySquarespace CommerceSquarespace+16 | — | — |
| 16 | Nesher Technologies Nano-biotechnology solutions for research and diagnostics | $4M | 130 mo ago | — | Armin Reitmair CEO | — | 2 patents Highly sensitive multiplexed microRNA detection technologies for molecular diagnostics | — |
| 17 | DxTerity Provider of a direct-to-consumer, non-clinical genetic tests | $4M | 137 mo ago | 37 | Bob Terbrueggen President and CEO | — | — | — |
| 18 | Gold Standard Diagnostics Diagnostic solutions improving lab efficiency and minimizing costs with extensive product menu | $3M | 161 mo ago | 41 41 → 66 (+61%) | John Griffiths CEO | — | — | — |
| 19 | Microsonic Systems Provider of ultrasonic sample processing | $2M | 189 mo ago | 11 | — | — | — | — |
| 20 | Pace Diagnostics Developer of point-of-care rapid diagnostics for tuberculosis, COVID-19, and lung cancer | $2M | 9 mo ago | 8 | Lorne Mattner Co-Founder & COO | — | — | — |
| 21 | Terapede Systems Ultra-high resolution, low dose flat panel X-ray detectors for medical imaging | $2M | 92 mo ago | 9 | Anand Sheel Co-Founder & CEO | — | — | — |
| 22 | Quasar Innovating dry EEG sensors and psychophysiological monitoring systems for diverse applications | $1M | 16 mo ago | — | Walid Soussou CEO | — | 7 patents Patents concentrated in health & consumer products | — |
| 23 | VitalScan Manufacturer of biometrical software and hardware products for monitoring | $590K | 189 mo ago | 12 | — | Cart FunctionalityDreamWeaverYouTube+13 | — | — |
| 24 | Drop Diagnostics Corp Disease diagnostic point-of-care device | $500K | 139 mo ago | — | Max Lamb Co-Founder | — | — | — |
| 25 | MYi Diagnostics and Discovery Next generation multiplexed proteomic profiling for precision medicine | $250K | 128 mo ago | 3 | Nicholas Schork CEO & Co-Founder | — | — | — |
| 26 | Orthogonal Diagnostics R&D company focused on manufacturing vitro diagnostic test systems for multiple therapeutic areas | $195K | 136 mo ago | — | David Charlton CEO | — | — | — |
| 27 | Intrinsic LifeSciences Innovators in hepcidin and erythroferrone (ERFE) research and diagnostic solutions | — | 44 mo ago | 12 | Elizabeta Nemeth Co-Founder | Cart FunctionalityWooCommerceWordPress+25 | 57 patents Therapeutic antibodies targeting erythroferrone and hepcidin for iron‑homeostasis disorders | — |
| 28 | Biomerica Biomedical tech company improving health with advanced diagnostics and therapeutics | — | 75 mo ago | 118 | Zack Cohen CEO | WordPressMySQLPHP+23 | 153 patents Diagnostic biosensor kits for food sensitivity testing across gastrointestinal, neurological, and dermatological disorders | — |
Top 12 Diversified Diagnostics companies in California
#1
Series A · Mountain View, California · founded 2020 · 10 employees$17.7Mraised▾
Provider of manufacturing diagnostic kits for multiple therapeutic areas
- Oct 2025Series A$40M
- May 2024Seed$17.7M
#2
Seed · Monrovia, California · founded 2017 · 8 employees$1.9Mraised▾
Developer of point-of-care rapid diagnostics for tuberculosis, COVID-19, and lung cancer. It focuses on researching, developing, licensing, manufacturing, and marketing diagnostics. It develops point-of-care rapid diagnostics through novel biomarkers and innovative diagnostic platforms.
- Aug 2025Grant (prize money)$300K
- Oct 2017Seed$1.6M
#3
Funding Raised · San Diego, California · founded 1997$1.4Mraised▾
Innovating dry EEG sensors and psychophysiological monitoring systems for diverse applications. They are a global leader in noninvasive biosensing systems, specializing in dry sensors for high-fidelity psychophysiological monitoring without gels or sticky pads. Their advanced technology integrates precision hardware with sophisticated algorithms, outputting actionable information about cognitive and physiological states. They build psychophysiological sensing systems to spec and design algorithms that output precise, useful metrics. They offer solutions for human performance, healthcare, and commercial applications, including ambulatory cognitive state evaluation, seizure detection, and integration into wearable devices. Their expertise spans EEG, ECG, EMG, EOG, Pulse Oximetry, respiration, and inertial motion units. They provide unified data streams, eliminating integration headaches and reducing sources of error in physiological monitoring and analysis. They work with both government and commercial organizations to turn concepts into systems, offering expertise from research systems to medical devices.
- Jan 2025Grant (prize money)$500K
- Jan 2025Grant (prize money)$500K
- Jul 2014Grant (prize money)$119K
- Nov 2009Grant (prize money)$147.6K
#4
Funding Raised · San Francisco, California · founded 2015 · 14 employees$5.5Mraised▾
Predictive medicine tools for early disease detection and improved healthcare. This company focuses on developing innovative diagnostic solutions for proactive healthcare management. They are dedicated to creating advanced technologies for early and accurate disease detection, enabling timely intervention and improved patient outcomes. Their work spans across various applications in predictive medicine, with a strong emphasis on immunology, protein biochemistry, and engineering. They offer a range of products and services, including clinical services and test kits, designed to facilitate early diagnosis and risk prediction. Their technology aims to improve accuracy in disease risk prediction and enhance overall healthcare through advanced screening methods.
- Dec 2023Grant (prize money)$3M
- Nov 2019Grant (prize money)$1.5M
- Mar 2018Grant (prize money)$750K
- Jul 2016Grant (prize money)$225K
#5
Public · San Diego, California · founded 1937 · 7000 employees$69.1Mraised▾
Provider of diagnostic healthcare products, ranging from home to hospital use. They offer solutions for laboratory professionals, healthcare providers, and consumers. Products include immunoassay testing, molecular diagnostic systems, and rapid lateral-flow tests. The company also provides related resources, such as learning hubs and technical documentation.
#6
Series D · San Diego, California · founded 2007 · 484 employees$196Mraised▾
Drug testing laboratory empowering clinicians with comprehensive data insights for patient care. It is a specialty laboratory providing drug testing services to help clinicians monitor prescription medications and illicit drug use, and assess treatment plan effectiveness. The company processes specimens to provide analytics regarding emerging drug use trends, collaborating with organizations to address the nation’s drug overdose crisis. Services include urine drug testing and oral fluid drug testing, offering definitive detection of numerous drugs and metabolites. The platform leverages data intelligence and clinical expertise to help clinicians improve patient care. They publish reports and alerts on drug use trends, offering educational resources and clinical excellence. The company is committed to ethics, conduct, and compliance, providing solutions and guidance to achieve the highest levels of compliance.
- Aug 2010Series D$196M
#7
Series A · Santa Cruz, California · founded 2011 · 37 employees$45Mraised▾
Ontera is developing a range of diagnostic devices. The company provides devices based on nanopore technology. The company platforms can simultaneously analyze nucleic acids, proteins, and small molecules. The devices are portable and perform automated extraction and concentration of rare target molecules.
- Aug 2020Series A$20.5M
- Jun 2019Grant (prize money)$982.6K
- Jan 2018Series A$4.6M
- Apr 2017Series A$24.5M
#8
Series A · San Francisco, California · founded 2017 · 21 employees$23.6Mraised▾
Chronus Health's provides the platform for diagnosis for Complete Blood Count (CBC) and Complete Metabolic Panel (CMP). It does the analysis by the help of the disposable test strip where sample preparation, fluid movement, and embedded sensors in it.
- Jan 2022Series A$22M
- Mar 2021Conventional Debt$1M
- May 2019Seed$1.3M
- Sep 2018Seed$250K
#9
Acquired · San Diego, California · founded 2018 · 25 employees$22Mraised▾
Provider of a point-of-care clinical diagnosis device for healthcare professionals. The company has developed proprietary technology named Lumiphore which has the ability to quantify patient samples such as blood, urine, stool for immunoassay tests. The device enables healthcare professionals to diagnose and plan treatments based on the results provided by the device.
- Jul 2021Convertible Debt$13M
- Jul 2020Series A$9M
- Jul 2020Conventional Debt$2M
#10
Deadpooled · San Francisco, California · founded 2006 · 25 employees$49Mraised▾
Nodality is a life sciences company that helps drug developers deliver drugs to precisely targeted patient groups. Their customers range from large pharmaceutical companies to small and mid-sized biotechnology companies. They provide products and services to drug developers. Nodality’s technology is founded around a multiparametric flow cytometry platform – Single Cell Network Profiling (SCNP) – that provides robust, human cell-based translational models of disease, drug activity, and patient responses. SCNP reveals complex biology at the single-cell level.
- Aug 2011Series C$10M
- Mar 2010Series B$15.5M
- Oct 2009Series B$3.5M
- 2009Series B$20M
#11
Deadpooled · Carpinteria, California · founded 2004 · 11 employees$26.7Mraised▾
Singapore Togel results, data, and prize information provider, offering the latest Singapore lottery results, data, and prize information. This platform delivers fast updates on Singapore Pools lottery outcomes, compiling data into accessible tables. Bettors gain insights for informed decision-making in online Togel Singapore. Live updates ensure timely access to winning numbers. It serves as a reliable source for enthusiasts seeking accurate and official lottery information. The website provides a comprehensive resource for players engaged in the Singapore lottery scene. It helps players to login and register to check the results.
- Sep 2011Series C$10M
- Feb 2009Series C$5M
- Aug 2006Series B$9M
- Dec 2005Series A$2.7M
#12
Acquired · San Diego, California · founded 1988 · 73 employees$24Mraised▾
Point-of-care diagnostic solutions for lipid, cholesterol, and glucose testing. They provide rapid, accurate, and actionable results for immediate risk assessment and therapeutic monitoring. Their analyzer is engineered for confidence, setting the standard in point-of-care testing. They offer a range of products and solutions, including analyzers, systems, controls, and accessories. They provide support through product documents, demos, installation, training, and alerts. Their offerings cater to healthcare professionals in physician offices, hospitals, and wellness programs. They focus on providing diagnostic tools for heart disease and diabetes, ensuring clinical decisions are supported by lab-accurate results. They are committed to innovation and quality in point-of-care diagnostics.
- Feb 1991Series B$24M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Diversified Diagnostics coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.