Quest Diagnostics reported second quarter 2026 revenues of $3.04 billion, a 10.2% increase from 2025, and adjusted diluted EPS of $3.12, up 19.1% year-over-year. The company raised its full year 2026 guidance, now expecting revenues between $11.95 billion and $12.05 billion and adjusted diluted EPS between $11.05 and $11.25. Quest Diagnostics is a provider of diagnostic information services.
