Quest Diagnostics Reports Over 9% Revenue Growth in Q1
Written by Emily J. Thompson, Senior Investment Analyst
Updated: 2 days ago
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Should l Buy DGX?
Source: PRnewswire
- Significant Revenue Growth: Quest Diagnostics reported net revenues of $2.895 billion for Q1, reflecting a 9.2% year-over-year increase, almost entirely driven by organic growth, showcasing the company's strategic execution in delivering innovative diagnostic solutions.
- Earnings Per Share Increase: The adjusted diluted EPS rose by 15.5% to $2.50, indicating successful operational efficiency and cost control, which further bolsters investor confidence in the company's financial health.
- Upgraded Full-Year Guidance: Following a robust first quarter, the company raised its 2026 revenue guidance to between $11.78 billion and $11.90 billion, with expected growth rates of 6.8% to 7.8%, reflecting management's optimistic outlook for future performance.
- Stable Operating Cash Flow: Although operating cash flow decreased by 11.6% year-over-year to $278 million, the company anticipates maintaining approximately $1.75 billion in operating cash flow for the year, indicating strong financial stability.
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Analyst Views on DGX
Wall Street analysts forecast DGX stock price to fall
5 Analyst Rating
3 Buy
2 Hold
0 Sell
Moderate Buy
Current: 204.000
Low
190.00
Averages
203.33
High
210.00
Current: 204.000
Low
190.00
Averages
203.33
High
210.00
About DGX
Quest Diagnostics Incorporated is a provider of diagnostic information services. The Company provides diagnostic insights from the results of its laboratory testing to enable people, physicians, and organizations to take action to improve health outcomes. It operates through the DIS segment, which provides diagnostic information services to a range of customers within its primary customer channels: physicians, hospitals, and patients and consumers. It offers broad access to clinical testing through a nationwide network of laboratories, patient service centers, phlebotomists in physician offices, and connectivity resources, including call centers and mobile phlebotomists, nurses and other health and wellness professionals. It also focuses on artificial intelligence (AI) and digital pathology solutions. The Company’s services primarily are provided under the Quest Diagnostics brand and under other brands, including AmeriPath, Dermpath Diagnostics, ExamOne, and Quanum.
About the author

Emily J. Thompson
Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.
- Strong Financial Performance: Quest Diagnostics reported Q1 2026 revenue of $2.9 billion, reflecting approximately 9% year-over-year growth, exceeding consensus estimates by $60 million, indicating robust demand in its diagnostic information services segment.
- Earnings Per Share Growth: The adjusted diluted EPS for the quarter reached $2.52, marking a 13% year-over-year increase and surpassing estimates by $0.13, which highlights an improvement in adjusted operating income margin by 10 basis points to 15.4% compared to the prior year.
- Upgraded Full-Year Guidance: Following the strong Q1 results, Quest raised its full-year revenue outlook to between $11.78 billion and $11.90 billion, with adjusted diluted EPS expectations of $10.63 to $10.83, both exceeding consensus estimates at the midpoint.
- Positive Future Outlook: Earlier in the year, Quest had projected revenue of $11.70 billion to $11.82 billion for 2026, and the recent upward revision reflects the company's confidence in sustained growth, particularly as demand for diagnostic services continues to rise.
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- Quest Diagnostics Strong Results: Laboratory testing services company Quest Diagnostics posted first-quarter earnings of $2.50 per share, exceeding the expected $2.37, with revenue reaching $2.90 billion, surpassing the $2.83 billion consensus estimate, leading to a 5.2% stock increase, highlighting its competitive edge in the industry.
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- Revenue Growth Highlight: Quest Diagnostics reported consolidated revenues of $2.9 billion in Q1 2026, reflecting a 9.2% year-over-year increase primarily driven by organic growth, indicating strong demand for clinical innovations and expansion into new areas, which is expected to enhance the company's competitiveness in the healthcare market.
- Upward Guidance Revision: Management raised its revenue guidance for 2026 to between $11.78 billion and $11.9 billion, with adjusted EPS expectations ranging from $10.63 to $10.83, reflecting confidence in future performance and a strategic focus on sustained growth.
- Increased Customer Engagement: The Quest AI Companion was engaged approximately 350,000 times in Q1, showcasing the company's success in patient interaction and digital transformation, which is anticipated to enhance customer loyalty and drive future revenue growth.
- Operational Efficiency Improvement: Although total revenue per requisition decreased by 1.3% year-over-year, excluding business mix impacts, it increased by approximately 2.5%, indicating positive progress in optimizing operations and enhancing service quality.
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