Quest Diagnostics Hours of Operation [Updated 2023]

If you are trying to find the best and most trustworthy medical laboratory for your personal use, you can consider choosing Quest Diagnostics. You are considering making an appointment at Quest Diagnostics, but you are unaware of the hours of operation. 

We are available to help you with this. If you’re looking for information about Quest Diagnostic’s operating hours or unsure if they are helpful to you, you’ve arrived at the right site.

Quest Diagnostics Hours: 

Days Timings
Monday 06:00 AM to 03:00 PM
Tuesday 06:00 AM to 03:00 PM
Wednesday 06:00 AM to 03:00 PM
Thursday 06:00 AM to 03:00 PM
Friday 06:00 AM to 03:00 PM
Saturday Closed
Sunday Closed

Quest Diagnostics Opening Hours: 

Quest Diagnostics is open for business every day at 6:00 AM, which doesn’t include Saturdays and Sundays. Customers at Quest Diagnostics are treated politely and given the materials they require and desire.

Quest Diagnostics Closing Hours: 

Quest Diagnostics shuts between 3:00 to 4:00 PM Customers can visit between these hours every day. If you are interested in visiting, you are welcome to do so at any time within those hours.

Quest Diagnostics Weekend Hours: 

As for the weekend hours of Quest Diagnostics, they are not operating on the weekends and won’t be open for their customers.

Quest Diagnostics Saturday Hours: 

Quest Diagnostics locations are closed on Saturdays, as they are unavailable on weekends for an appointment. 

Quest Diagnostics Sunday Hours: 

Just like Saturdays, Quest Diagnostics is also not open on Sundays. You won’t find most of their locations available. 

Quest Diagnostics Holiday Hours:

 Quest Diagnostics lists the following times as the shutdown days:

  • Christmas Day
  • Easter Sunday
  • Thanksgiving Day

However, a variety of national holidays, such as the ones listed below, are observed in Quest Diagnostics:

  • Veterans Day
  • Memorial Day
  • Cinco de Mayo
  • Good Friday
  • New Year’s Day 
  • Mother’s Day
  • Father’s Day
  • Christmas Eve
  • Columbus Day
  • Labor’s Day
  • Bad Friday
  • New Year’s Eve
  • Valentine’s Day
  • Black Friday
  • Cyber Monday 
  • President’s Day
  • Halloween day

Quest Diagnostics Christmas Hours:

You should avoid visiting Quest Diagnostics on Christmas Day since it will be closed, as was stated over the holiday hours before. However, if your nearby location still accepts customer appointments, you may ask.

Quest Diagnostics New Year’s Hours: 

New Year’s hours at Quest Diagnostics are just the same as they are operating on normal weekdays and will be open. If it’s the weekend, there can be a chance of either being open or closed. 

Quest Diagnostics Thanksgiving Hours: 

Despite being close by on Thanksgiving, Quest Diagnostics won’t provide any of its facilities. Organize your appointment before or after Thanksgiving Day if you want to go there so they can accommodate you.

Recent Post: Have a look at the Rainbow Hours of Operations.

About Quest Diagnostics: 

The forensic lab Quest Diagnostics is based in the United States. Quest, a Fortune 500 business, operates in the US, Puerto Rico, Mexico, and Brazil. Additionally, Quest has joint venture partnerships with other hospitals and healthcare providers worldwide.

Quest Diagnostics Contact Number: 

(866) 697-8378

Quest Diagnostics Near Me:

Quest Diagnostics Social Accounts: 





Frequently Asked Questions: 

How can I verify my appointment with Quest Diagnostics?

If you know the confirmation email for your appointment, click or input it, and then respond to the instructions. Select Send Details after entering the appointment’s email address or phone number.

Is Quest Diagnostics open on New Year’s Day?

On January 1st, Quest Diagnostics will be open during regular operating times until it’s not the weekend days.

Is Quest Diagnostics open on Christmas Day?

You should not plan to visit Quest Diagnostics on Christmas Day because it won’t be open. If you desire to go, you can go the day after.

Is Quest Diagnostics open on Labor Day?

Considering that most businesses are often closed on Labor Day, Quest Diagnostics will be open and operating during regular business hours.

Is Quest Diagnostics open on Thanksgiving Day?

You won’t be notified about Quest Diagnostics’s opening on Thanksgiving Day, but you may still contact the nearest number to see if they could be open by chance.


A precise conclusion helps you easily summarise this article’s complete content. They are constantly available to serve their clients and make their encounters delightful, except for holidays which mostly include the weekend days, Christmas Day, Thanksgiving Day, and Easter Sunday. Along with the days of the week’s active hours, they have also been observed earlier. Check if Quest Diagnostics in your neighborhood is open before you go.