How to Cancel a Quest Diagnostics Appointment

You can cancel a Quest appointment online, by phone, or in person, and most cancellations take effect immediately

Quest Diagnostics lets you cancel an appointment through their patient portal, by calling the location directly, or by walking in and telling staff you need to cancel. The fastest route is usually the online portal if you have your appointment confirmation email or account set up. If you call, have your appointment number or date and time ready — the staff member will confirm your identity and process the cancellation on the spot. Walk-in cancellations work too, but calling or canceling online means the slot opens up for another patient right away.

Canceling does not affect your ability to schedule future appointments, and there is no penalty or fee for canceling. Quest does not charge a cancellation fee the way some medical offices do. If you need to reschedule instead of cancel, you can often do that in the same step — the portal and phone staff can both book you into a different time slot while they process the cancellation.

Key Takeaways

• The Quest patient portal is the fastest way to cancel if you have your confirmation email or login credentials.
• Calling the Quest location where your appointment is scheduled will cancel it immediately and takes about five minutes.
• You can cancel up to the day of your appointment with no penalty or fee.
• If you want to reschedule instead, staff can often book your new appointment while processing the cancellation.
• Walking in and telling staff you need to cancel works, but calling or using the portal is faster because it updates the system right away.

Canceling through the Quest patient portal

Log into your Quest account on the Quest Diagnostics website or mobile app. Click on "Appointments" or "My Appointments" — the exact label varies depending on whether you are on desktop or mobile. Find the appointment you want to cancel in the list, and look for a "Cancel" button or link next to it. Click that button, and the system will ask you to confirm the cancellation. Once you confirm, the appointment is canceled and you will see a confirmation message on screen.

If you do not have a Quest account yet, you can create one using your email address and the information from your appointment confirmation. You will need your date of birth and the appointment details to set up the account. After you create it, follow the same steps to cancel. If you have trouble logging in or cannot find the appointment in your portal, call the location directly — sometimes appointments scheduled by phone or in person take a few hours to appear in the online system.

Canceling by phone

Call the Quest location where your appointment is scheduled. You can find the phone number on your appointment confirmation email, on the Quest Diagnostics website, or by calling Quest's main line at 1-866-QUEST-99 (1-866-787-3899) and asking to be transferred to your local lab. Have your appointment number, date, and time ready when you call. The staff member will confirm your identity — usually by asking for your date of birth and the type of test you were scheduled for — and will cancel the appointment in their system.

Phone cancellations are processed immediately, and the staff member will give you a verbal confirmation. If you want to reschedule, tell them before you hang up and they can often book you into a new time slot in the same call. If the location is closed when you call, you can leave a voicemail with your name, appointment details, and request to cancel, but calling back during business hours is faster because it guarantees the cancellation is processed.

Canceling in person at the lab

Walk into the Quest location and tell the front desk staff that you need to cancel your appointment. They will ask for your name and date of birth to pull up your appointment in their system. Once they confirm which appointment you want to cancel, they will process it right there. This method works if you are already at the location or nearby, but it is slower than calling or using the portal because you have to travel and wait for a staff member to be available.

If you arrive at your appointment time and decide you cannot go through with the test, you can also cancel at that moment by telling the phlebotomist or front desk. They will note the cancellation in your file, and you will not be charged for the visit.

What happens after you cancel

Once your cancellation is processed, the appointment slot opens up for another patient to book. You will not receive a bill or charge for the canceled appointment. If your doctor ordered the test, the order remains in your medical record — you can reschedule the same test whenever you are ready, or your doctor can place a new order if needed.

If you cancel and then change your mind, you can schedule a new appointment through the portal, by phone, or in person. There is no limit on how many times you can cancel and reschedule. If you are canceling because you are unsure whether you still need the test, contact your doctor's office to confirm whether the order is still active before you reschedule.

Canceling if you have already checked in

If you have already checked in at the lab but have not yet had your test done, tell the front desk staff that you need to cancel. They will update your status in the system and you can leave. You will not be charged for the visit. If you have already had the test performed, you cannot cancel the appointment retroactively, but you can contact Quest's customer service if you have questions about the results or billing.

If you checked in but need to reschedule because you are not feeling well or have a scheduling conflict, let the staff know. They may be able to reschedule you for a later time that same day or for another day, depending on how much time you need and the lab's availability.

Frequently Asked Questions

Will I be charged if I cancel my Quest appointment?

No. Quest does not charge a cancellation fee. You will not be billed for a canceled appointment. If your insurance company or doctor's office has specific requirements about cancellations, contact them directly, but Quest itself does not penalize cancellations.

Can I cancel the same day as my appointment?

Yes. You can cancel on the day of your appointment with no penalty. If you call or use the portal to cancel, do it as soon as you know you cannot make it so the slot can open up for another patient. If you are already at the lab, tell the front desk and they will process the cancellation immediately.

What if I need to cancel but do not have my appointment number?

Call the Quest location directly and give the staff member your name, date of birth, and the date and time of your appointment. They can pull up your appointment using that information and cancel it. You do not need the appointment number to cancel.

If I cancel, can I reschedule the same test later?

Yes. After you cancel, you can schedule a new appointment for the same test through the portal, by phone, or in person. The original doctor's order usually remains active, so you can reschedule without needing a new order from your doctor. If the order has expired, your doctor can place a new one.

What if I cancel but my doctor still needs the test done?

Contact your doctor's office to confirm the order is still active. Once you confirm, reschedule your Quest appointment through the portal, by phone, or in person. Your doctor's order will stay in the system until the test is completed or the order expires.