Quest Diagnostics Incorporated revised earnings guidance for the full year 2021. For the year, the company now expects net revenues to be between $9.84 billion and $10.09 billion compared to previous guidance range of $9.54 billion to $9.79 billion. Reported diluted EPS is expected to be between $12.54 and $13.24 compared to previous guidance of $11.48 to $12.18.