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US Diagnostics & Research Stocks in 2026

Diagnostics and research companies support healthcare through laboratory testing, genetic analysis, scientific instruments and clinical research. These diagnostic companies serve hospitals, laboratories, universities and pharmaceutical businesses developing new treatments. Demand for diagnostic stocks can depend on test volumes, research spending, drug-development activity and the adoption of new technologies. In this article, we cover US diagnostic stocks and some leading companies, along with the taxation and advantages.

List of US Diagnostics & Research Stocks in 2026

US Diagnostics & Research Stocks

Explore US diagnostics and research stocks involved in diagnostic testing, laboratory services, life sciences research and related healthcare technologies. Analyse companies using live share price, market cap, returns, valuation, profitability and other key financial metrics.

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Showing 1 - 20 of 45 results

last updated at 2:30 AM IST 
NameUS Stocks (45)↓↓Sub-SectorSub-Sector↓↓Market CapMarket Cap↓↓Close PriceClose Price↓↓PE Ratio (TTM)PE Ratio (TTM)↓↓1M Return1M Return↓↓1D Return1D Return↓↓Return on EquityReturn on Equity↓↓PB RatioPB Ratio↓
1.Thermo Fisher Scientific IncTMODiagnostics & ResearchDiagnostics & Research2,56,242.272,56,242.27709.18709.1836.5536.554.354.350.730.7313.3813.384.624.62
2.Danaher CorporationDHRDiagnostics & ResearchDiagnostics & Research1,63,092.761,63,092.76234.07234.0738.4138.413.523.521.231.238.198.193.053.05
3.Natera IncNTRADiagnostics & ResearchDiagnostics & Research59,217.3159,217.31436.00436.00--5.185.182.792.79-12.54-12.5432.0432.04
4.Agilent Technologies IncADiagnostics & ResearchDiagnostics & Research50,039.5550,039.55181.48181.4835.0135.013.693.69-0.14-0.1420.9720.976.746.74
5.Waters CorporationWATDiagnostics & ResearchDiagnostics & Research46,822.8746,822.87480.07480.07118.63118.638.308.300.650.651.921.923.033.03
6.IQVIA Holdings IncIQVDiagnostics & ResearchDiagnostics & Research46,327.7546,327.75275.06275.0634.2034.202.262.26-1.51-1.5121.3921.397.307.30
7.IDEXX Laboratories IncIDXXDiagnostics & ResearchDiagnostics & Research44,215.9044,215.90575.98575.9839.4439.447.977.972.302.3074.2174.2127.8627.86
8.Illumina IncILMNDiagnostics & ResearchDiagnostics & Research42,199.9742,199.97290.06290.0651.8551.856.646.640.440.4432.3432.3414.4214.42
9.Mettler-Toledo International IncMTDDiagnostics & ResearchDiagnostics & Research33,768.0133,768.011,718.611,718.6137.9837.9811.7911.791.121.1229.5129.512,608.862,608.86
10.Laboratory Corporation of America HoldingsLHDiagnostics & ResearchDiagnostics & Research26,857.8926,857.89368.16368.1627.3927.3919.2219.222.182.1811.7311.733.113.11
11.Quest Diagnostics IncorporatedDGXDiagnostics & ResearchDiagnostics & Research26,772.1626,772.16245.62245.6224.0624.065.885.882.992.9915.3215.323.513.51
12.Guardant Health IncGHDiagnostics & ResearchDiagnostics & Research23,894.9723,894.97185.31185.31--4.264.261.421.42-4,584.47-4,584.4755.6755.67
13.Medpace Holdings IncMEDPDiagnostics & ResearchDiagnostics & Research18,847.0418,847.04677.56677.5637.4137.418.918.91-2.17-2.17117.88117.8832.3632.36
14.Revvity Inc.RVTYDiagnostics & ResearchDiagnostics & Research18,061.3818,061.38165.78165.7877.4477.448.528.520.250.253.213.212.482.48
15.Charles River LaboratoriesCRLDiagnostics & ResearchDiagnostics & Research17,284.5117,284.51373.98373.98--26.3626.360.570.57-7.52-7.526.016.01
16.ICON PLCICLRDiagnostics & ResearchDiagnostics & Research14,117.6814,117.68215.48215.48194.66194.6626.4926.490.690.690.290.291.511.51
17.Qiagen NVQGENDiagnostics & ResearchDiagnostics & Research10,359.9310,359.9350.3450.3425.6025.6013.3813.380.040.0411.9311.933.103.10
18.GRAIL, LLCGRALDiagnostics & ResearchDiagnostics & Research7,051.917,051.91158.92158.92--16.3716.370.670.67-16.12-16.122.652.65
19.RadNet IncRDNTDiagnostics & ResearchDiagnostics & Research5,787.435,787.4373.6573.65--4.254.250.230.231.501.505.035.03
20.BillionToOne, Inc. Class A Common StockBLLNDiagnostics & ResearchDiagnostics & Research5,382.635,382.63114.00114.00181.06181.06-3.54-3.540.640.6410.6810.689.809.80
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Disclaimer: Please note that the above table is for informational purposes only, and is not recommendatory. Please do your own research or consult your financial advisor before investing. The data is derived from Tickertape US Stock Screener and is subject to real-time updates.

Overviews of Top US Diagnostics & Research Stocks

Thermo Fisher Scientific Inc

Thermo Fisher Scientific provides laboratory instruments, analytical technologies, reagents, consumables and pharmaceutical development and manufacturing services. Its customers include pharmaceutical and biotechnology companies, hospitals, diagnostic laboratories, universities and government research institutions. The company operates across life sciences solutions, analytical instruments, specialty diagnostics and laboratory products and services.

Danaher Corporation

Danaher operates across biotechnology, life sciences and diagnostics. Its businesses provide technologies used in biological research, bioprocessing, laboratory analysis and clinical diagnostics. The company serves pharmaceutical and biotechnology companies, research institutions, hospitals and diagnostic laboratories through a portfolio of specialised operating businesses.

Natera Inc

Natera develops genetic and cell-free DNA tests used across oncology, women's health and organ health. Its products include non-invasive prenatal testing, hereditary disease testing and molecular residual disease testing used to detect and monitor cancer. The company primarily serves healthcare providers, laboratories and patients through its molecular diagnostics platform.

Agilent Technologies Inc

Agilent Technologies develops laboratory instruments, consumables, software and services used in life sciences, diagnostics and applied chemical markets. Its technologies support pharmaceutical research, clinical laboratories, environmental testing and other scientific applications. The company also provides services related to instrument maintenance, laboratory operations and workflow management.

IQVIA Holdings Inc

IQVIA provides clinical research services, healthcare data, analytics and commercial solutions to pharmaceutical, biotechnology and healthcare companies. Its Research & Development Solutions business supports clinical trials and drug-development programmes, while its Commercial Solutions business provides healthcare intelligence, technology and analytics.

What are US Diagnostics & Research Stocks?

US Diagnostics & Research stocks are shares of companies that provide products and services used to detect diseases, analyse biological samples and support scientific and clinical research. These businesses can include medical diagnostics stocks, genetic testing providers, laboratory instrument manufacturers, life sciences suppliers and clinical research organisations. Their customers commonly include hospitals, laboratories, pharmaceutical companies, biotechnology firms, universities and research institutions.

How to Evaluate and Invest in US Diagnostics & Research Stocks?

Here's how to invest in US diagnostic stocks from India, step by step:

  1. Log in or Create an Account: Visit Tickertape US Stocks and log in to your account. Create an account if you have not registered yet and complete the US investing account-opening process.
  2. Search for Diagnostics & Research Stocks: Use the Tickertape US Stock Screener and select 'Diagnostics & Research' under the industry filter.
  3. Analyse the Stocks: Compare financial performance, valuation, profitability, growth, test volumes, research exposure and other relevant business metrics.
  4. Add Money to Your US Wallet: Connect an eligible bank account and transfer money to your US Wallet under the Liberalised Remittance Scheme.
  5. Place Your Order: Select the Diagnostics & Research stock you want to invest in and click on 'Buy' to place the order through Tickertape.

Taxation of US Diagnostics & Research Stocks for Indian Investors

The tax treatment of US Diagnostics & Research stocks generally depends on the holding period, the investor's applicable income tax rate and US withholding rules on dividend income.

Income / Action Holding Period / Condition Tax Rate in the US Tax Rate in India
Long-Term Capital Gains (LTCG) Held for > 24 months 0% (Taxed only in India under DTAA) 12.5% (+ applicable surcharge & cess)
Short-Term Capital Gains (STCG) Held for < 24 months 0% (Taxed only in India under DTAA) Taxed as per your applicable income slab rate

Benefits of Investing in US Diagnostics & Research Stocks

Exposure to Different Areas of Healthcare

The category includes laboratory equipment manufacturers, molecular diagnostic companies, genetic testing providers and clinical research organisations. This gives investors exposure to areas ranging from lab testing stocks to companies supporting drug development and scientific research.

Recurring Consumables and Services Revenue

Laboratory instruments often require reagents, consumables, maintenance and software after installation. This can create recurring revenue beyond the original equipment sale for companies with large installed instrument bases.

Drug Development Exposure

Clinical research organisations and life sciences suppliers support pharmaceutical and biotechnology companies during drug discovery, trials and manufacturing. This provides exposure to R&D activity without relying on the success of a single drug.

Growing Use of Molecular Diagnostics

Genetic and molecular tests are increasingly used in areas such as prenatal screening, oncology and precision medicine. Natera processed more than 1 mn tests in Q2 2026, with oncology test volumes increasing 57.2% year over year.

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Risks of Investing in Diagnostics & Research Stocks

Research Spending Slowdowns

Laboratory equipment and research service providers can be affected when pharmaceutical companies, universities or biotechnology firms reduce research budgets or delay projects.

Reimbursement Changes

Diagnostic testing companies depend partly on insurance and government reimbursement. Changes in coverage criteria or reimbursement rates can affect revenue per test and the adoption of newer diagnostics.

Technology Obsolescence

Diagnostic and laboratory technologies evolve quickly. Companies that fail to improve test accuracy, throughput or cost efficiency may lose customers to newer platforms.

Regulatory Requirements

New diagnostic tests and healthcare technologies may require regulatory review before broader commercial use. Delays, additional evidence requirements or unsuccessful approvals can affect product launches and revenue growth.

Factors That Influence US Diagnostics & Research Stocks' Performance

Test and Sample Volumes

For diagnostic laboratories and genetic testing businesses, the number of tests processed is a key operating measure. Higher volumes can support revenue growth and improve the utilisation of laboratory infrastructure.

Consumables Pull-Through

For laboratory equipment companies, investors may examine how much recurring revenue comes from reagents, consumables and services used with installed instruments. A larger recurring component can reduce dependence on new equipment purchases.

R&D Bookings and Backlog

Clinical research organisations may report new bookings and contracted backlog. These figures can provide information about future project demand, although not all backlog necessarily converts into revenue on the originally expected schedule.

Gross and Operating Margins

Margins can reflect test pricing, product mix, laboratory efficiency, manufacturing costs and service revenue. For growing diagnostic businesses, investors may compare whether higher volumes are translating into improved profitability.

Key Growth Drivers for Diagnostics & Research Stocks

Higher Diagnostic Test Volumes

Companies that process clinical or genetic tests can grow as more patients use their services. Test volumes can increase through broader physician adoption, new clinical applications and expanded reimbursement coverage.

Expansion of Precision Medicine

Genomic and molecular testing can help identify disease risk, detect residual disease and guide treatment decisions. Wider clinical use of these technologies can create demand for specialised diagnostic platforms and testing services.

Biopharma Research Pipelines

Pharmaceutical and biotechnology companies use laboratory tools, clinical research services and analytical technologies throughout drug development. This can support demand for medical research stocks involved in clinical trials, laboratory equipment and research services.

Installed Laboratory Equipment Base

Scientific instruments can generate additional demand after installation through reagents, consumables, maintenance contracts and software. Growth in the installed base can therefore influence recurring revenue as well as equipment sales.

How to Track the Best US Diagnostics & Research Stocks from India on Tickertape?

You can track US diagnostic stocks and related ETFs from India on Tickertape's US Stocks & ETFs platform.

  1. Log in: Visit Tickertape and sign in to your account.
  2. Search Diagnostics & Research stocks: Look up companies involved in diagnostics, life sciences tools, genetic testing and clinical research.
  3. Use the screener: Filter US stocks by the 'Diagnostics & Research' industry.
  4. Compare metrics: Review market capitalisation, valuation ratios, profitability, returns, growth and financial health.
  5. Create a watchlist: Add selected companies to monitor their prices, financial performance, product developments and quarterly results.

Conclusion

US Diagnostics & Research stocks cover businesses involved in laboratory equipment, diagnostic testing, genomics, life sciences research and clinical trials. Their performance can depend on diagnostic volumes, biopharma R&D spending, technology adoption, reimbursement and demand for laboratory products and services. Investors can use the Tickertape US Stock Screener to compare diagnostic stocks using 60+ unique filters and custom filters across valuation, profitability, growth, financial health and other key metrics.

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    Frequently Asked Questions About Diagnostics & Research Stocks

    1. What are diagnostics and research companies?

      Diagnostics and research companies provide technologies and services used to detect diseases, analyse biological samples and support scientific or clinical research. Their activities can include laboratory testing, genetic analysis, scientific instruments, life sciences tools and clinical trials.

    2. What are US Diagnostics & Research stocks?

      US Diagnostics & Research stocks are shares of companies involved in diagnostics, laboratory technology, genetic testing, life sciences tools and clinical research. Their customers can include healthcare providers, laboratories, pharmaceutical companies and research institutions.

    3. Who are the top 5 Diagnostics & Research companies?

      Based on market capitalisation in the attached Tickertape US Stock Screener, the top five Diagnostics & Research companies include:
      1. Thermo Fisher Scientific Inc
      2. Danaher Corporation
      3. Natera Inc
      4. Agilent Technologies Inc
      5. IQVIA Holdings Inc


      Disclaimer: The above US Diagnostics & Research stocks list is based on market capitalisation in the attached Tickertape screener and is for educational purposes only. It does not constitute investment advice. Investors should conduct their own research or consult a financial advisor before investing.

    4. What is the outlook for US Diagnostics & Research stocks?

      The outlook differs across diagnostic testing, laboratory tools and clinical research companies. Test adoption, pharmaceutical R&D activity and demand for scientific instruments can support growth, while reimbursement changes, research budget pressures and technology shifts can affect individual businesses differently.

      Disclaimer: This information is for educational purposes only and does not constitute investment advice. Investors should conduct their own research or consult a financial advisor before investing.

    5. Are US Diagnostics & Research stocks risky for Indian investors?

      Yes. Risks include changing research budgets, reimbursement pressure, regulatory requirements, competition and technology obsolescence. Indian investors should also consider movements between the rupee and US dollar.

    6. How can I compare US Diagnostics & Research stocks on Tickertape?

      You can use the Tickertape US Stock Screener to compare Diagnostics & Research stocks across market capitalisation, valuation, profitability, growth, financial health and returns.

    7. Can beginners invest in US Diagnostics & Research stocks?

      Beginners can access US Diagnostics & Research stocks through platforms offering US equities. However, they should understand each company's business model, customer base, research exposure, profitability and regulatory risks before evaluating individual stocks.

      Disclaimer: This information is for educational purposes only and does not constitute investment advice. Investors should assess their financial goals and risk tolerance or consult a financial advisor before investing.

    8. How to invest in US Diagnostics & Research stocks from India?

      Investors in India can access US Diagnostics & Research stocks through Tickertape. The process generally involves:
      1. Create an account: Open a US investing account on Tickertape.
      2. Explore Diagnostics & Research stocks: Compare companies involved in diagnostics, genetic testing, laboratory technology and clinical research.
      3. Complete KYC: Verify your identity and submit the required documents.
      4. Link a bank account: Connect an eligible bank account for LRS remittances.
      5. Add funds: Transfer money to your US investing account.
      6. Place an order: Select a Diagnostics & Research stock and place an order, including fractional orders where available.

    9. What are the advantages of investing in US Diagnostics & Research stocks?

      Diagnostics & Research stocks provide exposure to several areas of healthcare, including laboratory testing, genomics, scientific instruments and drug development services. Some businesses also earn recurring revenue from consumables, reagents and service contracts.

      Disclaimer: This information is for educational purposes only and does not constitute investment advice. Investors should conduct their own research before investing.

    10. What is the difference between diagnostics stocks and pharmaceutical stocks?

      Diagnostics companies primarily develop tests, laboratory technologies and related services used to identify or monitor medical conditions. Pharmaceutical companies primarily develop and commercialise medicines. Investors comparing diagnostic stocks with pharmaceutical companies should consider the different revenue drivers, regulatory requirements and research risks involved.

    11. What metrics are commonly used to evaluate US Diagnostics & Research stocks?

      Common metrics include revenue growth, gross margin, operating margin, free cash flow and return on equity. Depending on the business, investors may also examine test volumes, instrument placements, consumables revenue, R&D bookings and contracted backlog.

    12. Why are test volumes important for diagnostic companies?

      Test volumes show how frequently a company's diagnostic services are being used. Higher volumes can increase revenue and improve laboratory utilisation, although profitability also depends on reimbursement, pricing and the cost of processing each test.

    13. What is recurring revenue in life sciences tools?

      Recurring revenue can come from reagents, consumables, maintenance, software and services required after a laboratory instrument has been installed. This revenue can continue throughout the instrument's operating life and may be less dependent on new equipment purchases.

    14. Do US Diagnostics & Research stocks pay dividends?

      Dividend policies differ across the industry. Established companies such as Thermo Fisher Scientific and Danaher pay dividends, while some faster-growing diagnostic and research companies may retain more cash for product development, expansion or acquisitions.

      Disclaimer: This information is for educational purposes only and does not constitute investment advice. Investors should conduct their own research or consult a financial advisor before investing.

    Disclaimer: This article is for informational purposes only. The content of the article, including securities/investment products mentioned, if any, should not in any manner be construed as investment advice, recommendation, offer, or solicitation to buy/hold/sell any securities/investment products. The securities quoted, if any, are for illustration only and are not recommendatory. Investments in the securities market are subject to market risks. Read all the related documents carefully before investing. Please consult a SEBI-registered financial advisor before investing.