Shares of revenue are estimates for three months ended June 30, 2026, not figures from a filing.
Routine and non-routine clinical laboratory tests
Tests of blood, urine and other samples, including common checks of blood counts, organ function, allergies and infections, as well as more specialized tests.
Advanced diagnostic tests
Specialized tests in areas such as cancer, genetics, brain health and autoimmune disease. Examples include blood tests for Alzheimer’s disease risk and Haystack testing for signs of remaining or returning cancer.
Anatomic pathology
Examination of tissue and cell samples to help diagnose cancer and other diseases.
Collaborative Lab Solutions
Services that help hospitals manage their laboratories, choose tests, control supply costs and use laboratory data.
QuestHealth.com
A website where people can buy health and wellness tests, with physician review of test orders and the option to discuss results with a physician.
ExamOne
Examinations, sample testing and information gathering that help life insurers assess insurance applicants.
Quest Diagnostics collects and tests blood, urine, tissue and other samples, then provides results that help healthcare professionals diagnose, monitor and treat medical conditions. It also performs tests that hospitals send to outside laboratories, helps hospitals run their own labs, and offers testing and data services to insurers and other organizations. It processed 244 million test requisitions (2025, high).
Built from Quest Diagnostics Inc.’s own filings with the U.S. Securities and Exchange Commission (SEC). Figures are as reported, with per-share history restated onto today’s share basis. This describes a business — it is not investment advice and not a recommendation to buy or sell anything.
The themes Quest Diagnostics is part of, the highest-graded companies in its industry, and the companies in its sector whose grade rose recently.
Graded A or B and worth $2B or more: A first, then the largest.
Rose to A or B on a filing in the last 90 days, worth $2B or more: largest first.
$259.61+0.3%Nov 12 close
Figures through September 30, 2026, from the 10-Q filed October 23, 2026
Quest Diagnostics performs medical tests on blood and other samples for doctors, hospitals, health plans and patients.
Company outlook: revenue of $12.1B to $12.1B for Fiscal year 2026 — up 9.5% on a year earlier
Grade A
The band under the price shows the grade on each date, built only from filings that were public by then.
Showing 2 of 40 quarters of Quest Diagnostics Inc.’s grade history. The other 38 go back to February 2017.
