Quest Diagnostics hours

Quest Diagnostics Hours

opening, closing & holiday hours

Phone Number : 1 (866) 697-8378

Email :

Website :

Quest Diagnostics
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Quest Diagnostics Business Hours

Quest Diagnostics is an American clinical laboratory. A Fortune 500 company, Quest operates in the United States, Puerto Rico, Mexico, and Brazil. Quest also maintains collaborative agreements with various hospitals and clinics across the globe.

If you want to connect with the customer service department of Quest Diagnostics, you can reach out by phone, email, through social media or traditional mail. Today, we will discuss about Quest Diagnostics hours of operation that includes Quest Diagnostics opening hours, closing, holiday hours, Easter Labor Day opening and closing business hours.

Quest Diagnostics Regular Business Hours

  • Weekdays: The customer service department is open Mon to Friday: 7:00 a.m. to 7:00 p.m. CT, weekdays.
  • Weekends: The customer service department is open Sat – Sun: OFF, closed in the event a holiday falls on a weekday or weekend, Quest Diagnostics is open for business.
  • Faults & Customer support: Quest Diagnostic’s faults and customer support teams are open for all year round during working days & also public holidays.

What time does Quest Diagnostics open and close?

Monday to Friday: 7:30 AM – 4:00 PM
Saturday: Closed
Sunday: Closed

Store hours today Opening Hours Closing Hours
Monday 7:30 AM 4:00 PM
Tuesday 7:30 AM 4:00 PM
Wednesday 7:30 AM 4:00 PM
Thursday 7:30 AM 4:00 PM
Friday 7:30 AM 4:00 PM
Saturday Closed Closed
Sunday Closed Closed

Quest Diagnostics Special Event Hours

Quest Diagnostics company holds special events from time to time. You’ll have to contact the customer service department to explore the hours of special events.

Quest Diagnostics Holidays Hours

The Quest Diagnostics website offer details relating to hours of operation. Customer service is closed on most public holidays. When you connect with the customer service department, you will notice the company observes Federal holidays.

  • Easter Sunday
  • Thanksgiving Day
  • Christmas Day

Contacting Quest Diagnostics to Verify Business Hours

  • Phone Number: You can reach Quest Diagnostics customer support by calling 1 (866) 697-8378 number directly.
  • Email Contact: When you send an email to the Business customer service department, you will need to use this email After you send your email, you will receive a response within 24 hours.
  • Mail: You can send your correspondence to the corporate headquarters here: 500 Plaza Drive, Secaucus, NJ 07094, United States.
  • Social Media: Customers can connect with the customer service department through social media using their official Quest Diagnostics or Twitter page and click on the “message” button. you will receive a response from the customer service department within 24 hours

Resource Links

Hopefully, we helped you to get some genuine hours details for Quest Diagnostics.

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