How to Schedule an Appointment at Quest Diagnostics

You can schedule a Quest appointment online, by phone, or in person at any Quest location

Quest Diagnostics operates thousands of patient service centers across the United States where you can get blood work, drug tests, physical exams, and other lab services. To use one, you need to schedule an appointment first — though walk-ins are accepted at many locations, scheduling ahead means shorter wait times and may provide access to the specific service you need.

The fastest way to book is through the Quest website or mobile app. You can also call Quest directly or walk into a center and ask the staff to schedule you on the spot. Your appointment confirmation will include the location address, date, time, and a list of what to bring.

Key Takeaways

• The Quest website (quest.com) and mobile app let you search by location, pick your service, and book an appointment in minutes without calling.
• You can call Quest at 1-800-222-0446 to schedule by phone, and staff can answer questions about fasting, what documents to bring, or whether your insurance is accepted.
• Walk-in appointments are available at most Quest locations, but scheduling ahead reduces your wait time and confirms the service you need is available that day.
• Bring a valid photo ID, insurance card (if you have one), and any paperwork your doctor gave you — Quest will ask for these before your appointment.
• If you need to cancel or reschedule, you can do so online, through the app, or by calling the same number you used to book.

Scheduling online through the Quest website or app

Go to quest.com and select "Schedule an Appointment" from the homepage. You will enter your zip code or city to see all Quest locations near you, along with their hours and available appointment times. The website shows you which services each location offers — some centers do only basic blood work, while others provide drug testing, physical exams, or specialized tests.

Once you pick a location and service, the site will show you available dates and times for the next several weeks. Select the slot that works for you, then enter your name, date of birth, phone number, and email address. If you have insurance, you can enter your member ID at this stage so Quest can verify coverage before you arrive. The confirmation email will arrive within minutes and include your appointment details, the address, parking information, and a checklist of documents to bring.

The Quest mobile app works the same way and syncs with your online account, so you can manage all your appointments in one place. You can also use the app to upload documents like your insurance card or doctor's order before your appointment, which speeds up check-in on the day.

Scheduling by phone or in person

Call Quest at 1-800-222-0446 to speak with a scheduling representative. Have your zip code ready so they can tell you which locations are nearest to you. They will ask what service you need, what dates and times work for you, and whether you have insurance. If you are unsure what test your doctor ordered, the representative can help you figure out which service code matches it.

Phone scheduling is useful if you have questions about fasting requirements — some blood tests require you to eat nothing after midnight the night before — or if you want to confirm that a specific location has the equipment for your test. Representatives can also tell you how long the appointment usually takes and what to expect when you arrive.

You can also walk into any Quest location during business hours and ask the front desk staff to schedule you. They will check availability on their system and book you for the same day or a future date. This works well if you need an appointment within a few hours or if you prefer to handle everything in person.

What to bring to your Quest appointment

Bring a valid photo ID — a driver's license, passport, or state ID card. Quest will not proceed without it. If you have health insurance, bring your insurance card. If you do not have insurance, Quest will still serve you and will discuss payment options at check-in.

Bring any paperwork your doctor gave you, such as a lab order form or a requisition. If your doctor ordered specific tests, the form will list them and may include special instructions like fasting or timing. If you scheduled online and uploaded documents to your account, Quest staff will have them on file, but bringing a physical copy avoids any mix-ups.

Wear loose, comfortable clothing that lets you roll up your sleeve easily if you are having blood drawn. Eat a light meal before your appointment unless your test requires fasting — the confirmation email will tell you if fasting is required. Bring a list of any medications you are taking, since some tests are affected by certain drugs.

Canceling or rescheduling your appointment

If you need to cancel or move your appointment to a different time, you can do so online through your Quest account, through the mobile app, or by calling 1-800-222-0446. Online and app cancellations process when ready, and you will get a confirmation email. Phone cancellations take a few minutes, and the representative will offer to reschedule you right away if you want a different time.

Cancel as soon as you know you cannot make it, especially if you are canceling within 24 hours of your appointment. This frees up the slot for someone else and prevents Quest from holding time for you. If you forget to cancel and miss your appointment, you can reschedule the next time you call or log in.

What happens at your Quest appointment

Arrive 10 to 15 minutes early to allow time for check-in. The front desk will ask you to verify your name, date of birth, and contact information, and will confirm which tests you are having done. If you have insurance, they will scan your card and verify your coverage. If you do not have insurance, they will explain the cost and payment methods before proceeding.

You will then be called back to a patient room or phlebotomy station. If you are having blood drawn, a phlebotomist will clean the inside of your arm, insert a needle into a vein, and collect blood into labeled tubes. The process usually takes a few minutes. If you are having a drug test, you will be directed to a restroom or collection area. Other tests may involve different procedures depending on what you are being tested for.

After your test is complete, you can leave. Results typically arrive within one to three business days and are sent to your doctor or to your online Quest account, depending on who ordered the test. You can log into your account to view results as soon as they are available.

Frequently Asked Questions

Do I need an appointment, or can I just walk in?

Most Quest locations accept walk-ins, but scheduling ahead is faster because you skip the waiting list. If you walk in without an appointment, you may wait 30 minutes to an hour depending on how busy the center is that day. Scheduling guarantees you a specific time slot.

What if I do not have insurance?

Quest serves uninsured patients. You will pay out of pocket, and the cost varies by test. Call 1-800-222-0446 or ask at the location to find out the price before your appointment. Some Quest locations offer discounts for uninsured patients or payment plans.

Can I reschedule my appointment online?

Yes. Log into your Quest account on the website or app, find your upcoming appointment, and click the option to reschedule. You can pick a new date and time from the available slots. You can also call 1-800-222-0446 to reschedule by phone.

How long does a typical appointment take?

Most appointments take 15 to 30 minutes from check-in to leaving. Blood draws are usually the fastest. Drug tests and physical exams may take longer. The confirmation email will estimate how long your specific appointment should take.

What if my test requires fasting?

Your confirmation email will tell you if fasting is required. If it is, do not eat or drink anything except water after midnight the night before your appointment. Fasting is common for cholesterol and glucose tests because food affects the results. If you accidentally eat before a fasting test, call Quest to reschedule rather than proceeding with the test.