How to Book a Quest Diagnostics Appointment Online

You can book a Quest appointment online through their website or mobile app in about five minutes

Quest Diagnostics lets you schedule lab work online without calling. You go to their website or use their mobile app, enter your zip code or location, pick a test from the list, choose a time slot that works for you, and confirm. The whole process takes a few minutes. You'll get a confirmation email right away with your appointment details, what to bring, and any prep instructions for your specific test.

The online booking system works best if you already know which test you need — either because your doctor ordered it or because you're doing an out-of-pocket wellness test. If you're not sure which test to get, you can still use the website to browse available tests and read descriptions, but you may want to call Quest or talk to your doctor first.

Key Takeaways

• Quest's online booking system is available on their main website and their mobile app, and you can complete a reservation in minutes.
• You'll need to know which test you want, your location or zip code, and a preferred date and time slot.
• The confirmation email includes your appointment details, the address of your local Quest location, and any fasting or preparation instructions for your test.
• You can cancel or reschedule through the same online system if your plans change.

Step-by-step process for booking online

Start by going to Quest Diagnostics' main website or opening their mobile app. On the homepage, you'll see a button or link that says something like "Schedule an Appointment" or "Book Now." Click that to enter the scheduling tool.

Enter your zip code or city to find Quest locations near you. The system will show you nearby patient service centers with available appointment times. Select the location that's most convenient — Quest has thousands of locations across the United States, so you usually have several options within a short distance.

Choose your test from the list. If you're not sure which test you need, you can search by symptom or health concern, or you can read test descriptions to find the right one. Once you've picked a test, the system will show you available dates and times at your chosen location. Pick a slot that fits your schedule.

Enter your personal information — name, date of birth, phone number, and email address. Review the information for accuracy, then confirm your appointment. You'll receive a confirmation email within minutes with your appointment number, location address, date and time, and any preparation instructions specific to your test.

What preparation instructions mean and how to follow them

Different tests have different prep requirements. Some tests require fasting (not eating or drinking anything except water for 8 to 12 hours before your appointment). Others require you to avoid certain medications or supplements. Some have no special prep at all. Your confirmation email will list exactly what you need to do.

Read the prep instructions carefully and follow them exactly as written. If you don't follow the instructions, your test results may be inaccurate, and you might have to come back and repeat the test. If you're unsure about any instruction — for example, if you take a medication and the instructions say to avoid medications — call the Quest location directly to ask before your appointment.

If you're fasting, plan to arrive early enough that you have time to check in. Bring your confirmation email or appointment number, a photo ID, and your insurance card if you have one. Some tests also require a doctor's order, so bring that if your doctor gave you one.

Rescheduling or canceling through the online system

If you need to change your appointment time or date, log back into the Quest website or app using the same email address you used to book. Find your appointment in your account and look for a "Reschedule" or "Modify" button. You can pick a new time slot at the same location or switch to a different location if you prefer.

If you need to cancel instead, the online system usually has a "Cancel Appointment" option. Canceling online is faster than calling, and you'll get a confirmation email. If you can't find the cancel button or if your appointment is within 24 hours, call the location directly — they can cancel it for you over the phone.

What happens if the online system doesn't have your test or location

Most common tests are available through the online booking system, but some specialized or less common tests may not be. If you search for a test and it doesn't appear, call Quest customer service or the location directly. They can tell you whether that test is available and help you schedule it by phone if needed.

Similarly, if you live in a very rural area, you might not see any Quest locations nearby in the online system. In that case, call Quest to find out whether they serve your area or whether they can refer you to a partner lab closer to you.

Using the Quest mobile app instead of the website

The Quest Diagnostics mobile app works the same way as the website — you enter your location, pick a test, choose a time, and confirm. The app may be slightly faster if you book appointments regularly, because it can save your information and let you book with fewer steps the next time.

The app also lets you view past test results if you've had tests done at Quest before, check the status of pending results, and get reminders about upcoming appointments. You can download the app from the Apple App Store or Google Play Store.

What to bring to your appointment

Bring your confirmation email or appointment number, a photo ID (driver's license, passport, or state ID), and your insurance card if you have one. If your doctor ordered the test, bring the order or requisition form — some locations ask for this, and it helps ensure the test is billed correctly.

If you're paying out of pocket, Quest will tell you the cost when you book online. You can pay at the location when you arrive, or some locations let you pay online before your appointment. Arrive 10 to 15 minutes early to allow time for check-in.

Frequently Asked Questions

Do I need a doctor's order to book online?

Not always. Many wellness tests and screening tests can be booked without a doctor's order and paid for out of pocket. However, if your doctor ordered a specific test, bring that order with you. The online system will let you book either way.

Can I book an appointment for someone else?

You can book for a family member or dependent if you have their information, but the appointment will be under their name. When they arrive, they'll need to bring their own photo ID. Some locations may ask security questions to confirm the person's identity.

What if I miss my appointment?

If you miss an appointment without canceling, Quest may charge a no-show fee depending on the location and test. If you realize you're going to be late or can't make it, call the location as soon as possible to reschedule or cancel.

How long does it take to get results after my appointment?

Results timing varies by test. Some results are ready within 24 hours; others take several days. Your confirmation email or the Quest website will tell you the expected turnaround time for your specific test. You can check your results online through your Quest account once they're ready.

Can I change my test after I've booked?

If you need a different test, it's usually easier to cancel your current appointment and book a new one for the test you actually need. You can do both through the online system in a few minutes.