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Find all detailed info for Quest Diagnostics in Mount Vernon, IL, including address, opening hours and contact number with ease.

  • Quest Diagnostics
  • 4 Cusumano Professional Plaza Dr, Mount Vernon, IL 62864
  • 618-343-5735
  • Mon: 5:00 PM - 11:00 PM
    Tue: 5:00 PM - 11:00 PM
    Wed: 5:00 PM - 11:00 PM
    Thu: 5:00 PM - 11:00 PM
    Fri: 5:00 PM - 11:00 PM
    Sat: 1:00 PM - 11:00 PM
    Sun: 1:00 PM - 11:00 PM

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