How to Cancel a Quest Diagnostics Appointment

The fastest way to cancel is through your Quest account online or by phone

You can cancel a Quest Diagnostics appointment through the Quest Patient Center website, by calling Quest directly, or by visiting the lab location where you booked it. The online method is usually quickest — you log in, find your appointment, and select the cancel option. If you booked by phone or in person, you can also cancel the same way. Quest does not charge a cancellation fee, and you can reschedule for a different date immediately after canceling.

The method you use depends on how you originally booked. If you made the appointment online through the Quest Patient Center, canceling online takes about two minutes. If you booked over the phone or at a lab, calling Quest is often simpler than logging in. Either way, have your appointment confirmation number ready — it appears in your confirmation email or text message.

Key Takeaways

• You can cancel through the Quest Patient Center website, by phone at 1-866-QUEST-4U (1-866-787-3748), or in person at your lab location.
• Canceling online through your Quest account is the fastest option and takes about two minutes if you have your confirmation number.
• Quest does not charge a fee to cancel, and you can reschedule for a different date right away.
• If you cancel within 24 hours of your appointment, call the lab directly to make sure the cancellation goes through in time.

Canceling through the Quest Patient Center website

Log in to your Quest Patient Center account at questdiagnostics.com. Click on "Appointments" or "My Appointments" — the exact label depends on which version of the site you see. Find the appointment you want to cancel in the list, and select "Cancel Appointment" next to it. Quest will ask you to confirm the cancellation. Once you confirm, the appointment is removed from your schedule and you will receive a confirmation email.

If you do not have a Quest Patient Center account, you can create one using your email address and a password. You will need your date of birth and the phone number or email associated with your appointment. Creating an account takes about five minutes and lets you manage all future appointments in one place. Once your account is set up, you can cancel, reschedule, or view results for any appointment without calling.

Canceling by phone

Call Quest Diagnostics customer service at 1-866-QUEST-4U (1-866-787-3748). Have your appointment confirmation number ready. The representative will look up your appointment and cancel it while you are on the phone. This method works during business hours, which vary by location but are typically 7 a.m. to 7 p.m. Monday through Friday and 8 a.m. to 4 p.m. Saturday.

If you are calling within 24 hours of your appointment, ask the representative to note in the system that you have canceled. This ensures the lab does not hold a slot for you or send you a reminder. If you cannot reach customer service, you can also call the specific lab location where your appointment is scheduled — the lab staff can cancel it directly and will have the most current schedule information.

Canceling in person at the lab

Walk into the Quest lab location where your appointment is scheduled and tell the staff you want to cancel. Bring your confirmation number or the appointment card if you have it. The staff will remove you from the schedule immediately and can answer questions about rescheduling on the spot.

This method is useful if you are already at the lab or live very close to it, but it is slower than calling or canceling online if you are not nearby. If you are canceling the same day as your appointment, going in person guarantees the lab knows you are not coming and can offer your time slot to another patient.

What happens after you cancel

Once your cancellation is confirmed, the appointment slot opens up for other patients to book. You will no longer see the appointment in your Quest Patient Center account. If your doctor ordered the test, the order does not disappear — you can reschedule the same test for a later date without asking your doctor again, as long as the order has not expired. Most lab orders are valid for 30 days from the date your doctor placed them.

If you cancel and then need the test done, you can reschedule through the same method you used to cancel. You can pick a new date and time right away, or wait and book later. There is no penalty for canceling and rescheduling, and you can do it as many times as needed.

Canceling within 24 hours of your appointment

If you need to cancel fewer than 24 hours before your appointment, call the lab location directly instead of using the website. Online cancellations may not process in time, and the lab might still expect you to show up. Calling the specific location ensures the staff knows you are not coming and can give your time slot to another patient.

Find the phone number for your lab location on the Quest website by entering your zip code in the "Find a Lab" tool. When you call, have your confirmation number ready and explain that you need to cancel same-day or next-day. The staff will confirm the cancellation and update the schedule right away, and you will not receive a reminder for an appointment that no longer exists.

If you need to reschedule instead of cancel

If you want to move your appointment to a different date or time rather than cancel it completely, you can reschedule directly through the Quest Patient Center or by phone. In the Patient Center, select your appointment and choose "Reschedule" instead of "Cancel." By phone, tell the representative the new date and time you prefer, and they will book it for you in the same call.

Rescheduling does not require a cancellation and is often faster than canceling and rebooking separately. Your doctor's order stays attached to the new appointment, so you do not need to contact your doctor or wait for a new order to be placed. You can reschedule as many times as you need without any cost.

Frequently Asked Questions

Will Quest charge me a fee to cancel?

No. Quest Diagnostics does not charge cancellation fees. You can cancel as many times as you need without any cost or penalty.

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

Your doctor's order remains active for about 30 days from when it was placed. You can reschedule the same test at any Quest location during that window without asking your doctor to reorder it. After 30 days, your doctor will need to place a new order.

Can I cancel through text message or email?

Quest does not offer cancellation through text or email. You must cancel through the Patient Center website, by phone, or in person at the lab. Phone and online are the fastest options.

What if I miss my appointment without canceling?

If you do not show up and do not cancel, Quest may mark the appointment as a no-show in your account. This does not affect your ability to book future appointments, but it is helpful to cancel if your plans change so the lab can offer your time slot to another patient.

How long does it take to cancel online?

Canceling through the Quest Patient Center website takes about two minutes if you have your confirmation number. The cancellation is instant, and you will receive a confirmation email within a few minutes.