How to Cancel a LabCorp Appointment

You can cancel a LabCorp appointment online, by phone, or in person, and the method depends on how you booked it

If you booked your LabCorp appointment through their website or mobile app, you can cancel it in the same place without calling. Log into your account, find the appointment in your schedule, and select the cancel option. The system will ask you to confirm, and you'll receive a confirmation email within a few minutes.

If you booked by phone or in person at a LabCorp location, you'll need to cancel the same way. Call the location directly using the phone number on your appointment confirmation, or walk in and speak to the front desk. Have your appointment confirmation number ready — it's on your confirmation email or text message.

LabCorp's main customer service line is 1-800-LAB-CORP (1-800-522-2677). This line can handle cancellations, but you may wait longer than calling your specific location. If you know which LabCorp site you're scheduled at, calling that location directly is usually faster.

Key Takeaways

• Online or app bookings can be cancelled through your LabCorp account without making a phone call.
• Phone or in-person bookings require you to cancel by calling the specific location or visiting in person.
• Have your appointment confirmation number ready when you call, as it speeds up the process.
• Cancelling at least 24 hours before your appointment time prevents potential no-show fees at some locations.
• If you need to reschedule instead of cancel, you can often do that through the same method you used to book.

Cancelling through your LabCorp online account

Go to labcorp.com and sign into your account using your username and password. If you don't have an account, you can create one with your email address. Once logged in, look for "My Appointments" or a similar section — the exact wording varies depending on whether you're on desktop or mobile.

Click on the appointment you want to cancel. The details page will show the date, time, location, and test type. Below that information, you should see a "Cancel Appointment" button or link. Click it, and the system will ask you to confirm the cancellation. After you confirm, you'll see a message saying the cancellation was successful, and an email confirmation will arrive within a few minutes.

If you booked through the LabCorp mobile app instead of the website, the steps are the same. Open the app, sign in, find your appointment, and tap the cancel option.

Cancelling by phone

Call the LabCorp location where your appointment is scheduled. The phone number is on your confirmation email or text message. When you call, have your confirmation number ready — it's a string of letters and numbers that makes the lookup instant.

Tell the staff member you want to cancel your appointment and provide your confirmation number or your name and date of birth. They'll pull up your appointment, confirm the details with you, and process the cancellation. Ask them to confirm that the cancellation is complete and whether you'll receive a confirmation email.

If you don't have the location's direct number, call LabCorp's main line at 1-800-522-2677. They can transfer you to your location or cancel it for you directly, though this may take longer during busy hours.

Cancelling in person at a LabCorp location

Walk into the LabCorp location where your appointment is scheduled and tell the front desk staff that you want to cancel. Bring your appointment confirmation number or your ID so they can look up your appointment quickly. They'll confirm the details and process the cancellation on the spot.

This method is useful if you're already at the location or nearby, but it's not necessary — calling or cancelling online is faster for most people. If you're cancelling the same day as your appointment, doing it in person ensures the cancellation is recorded immediately.

What happens after you cancel

Once your cancellation is processed, your appointment slot opens up for another person to book. You'll receive a confirmation email or text message within a few minutes confirming that the cancellation went through. Keep this confirmation in case you need proof later.

If you cancelled because you need to reschedule, you can book a new appointment right away through the same method you used to cancel. You don't need to wait for anything — your cancellation is final as soon as it's confirmed.

Some LabCorp locations charge a no-show fee if you don't cancel at least 24 hours before your appointment time. Cancelling ahead prevents this fee. If you're unsure whether your location has this policy, ask when you cancel.

If you can't reach your location or the website isn't working

If the LabCorp website is down or you can't reach your location by phone, call the main customer service line at 1-800-522-2677. They can cancel your appointment in their system even if you can't reach the specific location. Have your confirmation number and the location address ready.

If you're having trouble logging into your online account, try resetting your password. Go to labcorp.com, click "Forgot Password," and follow the steps to reset it. If that doesn't work, call customer service and they can help you regain access or cancel over the phone.

Rescheduling instead of cancelling

If you want to keep your appointment but change the date or time, you can reschedule instead of cancelling. Through your online account, click on the appointment and look for a "Reschedule" or "Change Appointment" option. This is faster than cancelling and rebooking separately.

If you're calling or visiting in person, tell the staff member you want to reschedule rather than cancel. They can often move you to a different time slot right away, depending on availability at your location. If your preferred time isn't available, they can put you on a waitlist or help you find the next open slot.

Frequently Asked Questions

Will I be charged a fee for cancelling?

Most LabCorp locations don't charge a cancellation fee if you cancel at least 24 hours before your appointment. Some locations may charge a no-show fee if you don't show up and didn't cancel in advance. Cancelling early prevents this fee. Ask your location about their specific policy when you book or cancel.

Can I cancel the same day as my appointment?

Yes, you can cancel on the same day, but do it as early as possible. Cancelling through the website or app is instant. If you call, reach out in the morning before your appointment time. Same-day cancellations may trigger a no-show fee at some locations, so check your location's policy.

What if I already checked in for my appointment?

If you've already checked in at the front desk, tell the staff member immediately that you need to cancel. They can remove you from the queue and update your status in the system. This is different from a no-show and won't trigger a fee.

Do I need to provide a reason for cancelling?

No. LabCorp doesn't require you to explain why you're cancelling. Simply tell them you want to cancel, provide your confirmation number or name, and they'll process it. You don't owe an explanation.

How long does it take to cancel?

Online or app cancellations are instant — you'll see confirmation immediately and receive an email within minutes. Phone cancellations take a few minutes depending on how busy the location is. In-person cancellations are also quick, usually under five minutes.