Quest Diagnostics Reports Fourth Quarter And Full Year 2020 Financial Results; Establishes Outlook For First Half Of 2021 - Fourth quarter revenues of $3.0 billion, up 55.8% versus 2019 - Fourth quarter diluted earnings per share from continuing operations ("EPS") of $4.21, up 126.9% from 2019; and adjusted diluted EPS of $4.48, up 167.7% from 2019 - Full year revenues of $9.44 billion, up 22.1% from 2019 - Full year diluted EPS of $10.47, up 70.8% from 2019; and adjusted diluted EPS of $11.18, up 70.4% from 2019 - Full year cash provided by operations of $2.0 billion, up 61.3% from 2019 News provided by Share this article Share this article SECAUCUS, N.J., Feb. 4, 2021 /PRNewswire/ -- Quest Diagnostics Incorporated (NYSE: DGX), the world's leading provider of diagnostic information services, announced today financial results for the fourth quarter and full year ended December 31, 2020.