How to Cancel a Quest Diagnostics Appointment

How to cancel a Quest appointment online or by phone

You can cancel a Quest Diagnostics appointment through your online account, by phone, or by visiting the location in person. The fastest route is usually the Quest patient portal — log in, find your appointment, and select the cancellation option. If you don't have online access or prefer to speak with someone, call the location directly using the phone number on your appointment confirmation, or call Quest's main line at 1-866-QUEST-99 (1-866-787-3899).

When you cancel, Quest typically asks whether you want to reschedule right away or cancel without booking a new time. If you cancel more than 24 hours before your appointment, there's usually no penalty. Cancelling within 24 hours may result in a no-show fee at some locations, though this varies by facility and your insurance plan.

Keep your appointment confirmation handy when you call — the staff will ask for your date of birth and the appointment date to pull up your record. If you're cancelling because you need to reschedule, the same call can book your new time slot.

Key Takeaways

• The Quest patient portal is the fastest way to cancel — log in, find your appointment, and select cancel without waiting on hold.
• You can also call the specific Quest location listed on your confirmation or reach Quest's central line at 1-866-787-3899.
• Cancelling more than 24 hours in advance usually avoids any no-show fees, though policies vary by location.
• Have your appointment confirmation and date of birth ready when you call, so the staff can locate your record quickly.
• If you're rescheduling rather than cancelling entirely, ask to book your new appointment during the same call.

Cancelling through the Quest patient portal

Log into your Quest account at questdiagnostics.com using your username and password. If you don't have an account, you can create one with your email address and a password. Once logged in, look for "Appointments" or "My Appointments" in the main menu.

Find the appointment you want to cancel — it will show the date, time, and location. Click on it to open the appointment details. You should see a "Cancel Appointment" button or link. Click it, and Quest will ask you to confirm the cancellation. Some locations may ask why you're cancelling, but this is optional. Once you confirm, you'll receive an on-screen confirmation and usually an email confirming the cancellation.

If you don't see a cancellation option in the portal, or if the appointment is within 24 hours, you'll need to call the location directly instead.

Cancelling by phone

Call the Quest location where your appointment is scheduled. The phone number appears on your appointment confirmation email or text message. When you call, have your date of birth and appointment date ready. The staff member will pull up your record and process the cancellation.

If you don't have the location's direct number, call Quest's central appointment line at 1-866-787-3899. They can cancel your appointment or transfer you to the specific location. Wait times vary depending on the time of day — early morning and late afternoon tend to be less busy.

When you cancel by phone, ask the staff member to note in your file whether you plan to reschedule. If you want a new appointment time, you can often book it during the same call rather than hanging up and calling back.

Cancelling in person at a Quest location

You can walk into the Quest location where your appointment is scheduled and ask the front desk to cancel it. Bring your appointment confirmation or your ID so they can find your record. This works well if you're already at the location or nearby, but it's not the fastest option if you're trying to cancel from home.

If you're cancelling because you need to reschedule, the front desk can often book your new appointment on the spot. Ask whether they have availability for the date and time you need.

What happens if you don't show up

If you miss an appointment without cancelling, Quest may mark it as a no-show in your record. Depending on your location and insurance, a no-show fee may apply — this is separate from any lab fees your insurance would normally cover. Some locations charge $25 to $50 for a no-show, though the amount varies.

More importantly, a no-show can delay your test results and any medical decisions your doctor is waiting to make. If you realize you can't make your appointment, cancelling rather than simply not showing up gives your doctor time to reschedule and keeps your medical timeline on track.

If you've already missed an appointment and want to reschedule, call the location or use the patient portal to book a new time. You can ask whether a no-show fee was charged and whether it can be waived in your situation.

Rescheduling instead of cancelling

If you need to move your appointment to a different date or time, you don't have to cancel and then book separately. In the patient portal, look for a "Reschedule" or "Change Appointment" option alongside the cancellation button. This keeps everything in one transaction and is faster than cancelling first.

When you call to reschedule, tell the staff member your preferred dates and times, and they'll show you what's available at your location. Quest locations often have multiple time slots throughout the day, and many offer early morning and evening appointments to fit different schedules.

If your location doesn't have an opening when you need it, ask whether a nearby Quest location can accommodate you instead. You can also ask about scheduling your test at a different facility if it's more convenient.

Cancelling a test ordered by your doctor

If your doctor ordered a lab test and you want to cancel it, contact your doctor's office first. Your doctor may need to formally cancel the order in their system so it doesn't stay on your medical record as pending. Once your doctor cancels the order, Quest will no longer expect you for that test.

If you cancel directly with Quest but your doctor's order is still active, you may receive reminder calls or emails to reschedule. Coordinating with your doctor prevents this confusion and ensures your medical records are accurate.

If you're cancelling because you have questions about why the test was ordered, or because you want a second opinion, talk to your doctor before cancelling. They can explain the reason for the test or discuss your concerns.

Frequently Asked Questions

Will I be charged a fee if I cancel my Quest appointment?

Most cancellations don't result in a fee if you cancel more than 24 hours in advance. Cancelling within 24 hours may trigger a no-show fee at some locations, typically $25 to $50, though this varies. Check your appointment confirmation or call the location to ask about their specific cancellation policy.

Can I cancel a Quest appointment the day of the appointment?

Yes, you can cancel on the day of your appointment, but you may be charged a no-show fee depending on your location and insurance. Call the location as soon as possible to cancel — the earlier you notify them, the better. If you're unable to make it, cancelling is still better than not showing up.

What if I can't log into the Quest patient portal?

If you've forgotten your password, use the "Forgot Password" link on the login page to reset it. If you don't have an account, create one with your email and a new password. If you're still having trouble accessing the portal, call the Quest location directly or the central line at 1-866-787-3899 to cancel by phone.

Do I need to tell my doctor if I cancel a Quest appointment?

Yes, it's a good idea to notify your doctor's office that you've cancelled the lab test, especially if your doctor was waiting for the results. Your doctor may want to reschedule the test or discuss why you're cancelling. This keeps your medical care on track and prevents your doctor from wondering why results never arrived.

Can I cancel a Quest appointment and reschedule for a different location?

Yes. When you cancel, ask whether you can reschedule at a different Quest location instead. Many areas have multiple locations with different hours, so you may find a time slot that works better for you elsewhere. The staff can check availability across nearby locations and book you at whichever one suits your schedule.