How to Cancel a LabCorp Appointment

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

LabCorp lets you cancel 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 login. If you cancel at least 24 hours before your scheduled time, there's typically no penalty. Cancelling less than 24 hours before may result in a no-show fee at some locations, though this varies.

The method you choose depends on how much time you have and whether you have your appointment details handy. If you're cancelling same-day or very close to your appointment time, calling the location directly is usually faster than waiting for an online system to process the change.

Key Takeaways

• You can cancel through the LabCorp patient portal, by calling your local LabCorp location, or by visiting in person.
• Cancelling at least 24 hours in advance typically avoids any no-show fees, though policies vary by location.
• If you need to reschedule rather than cancel entirely, you can often do this through the same methods without losing your appointment slot.
• Keep your appointment confirmation number or reference ID handy when you call, as staff will ask for it to locate your record.
• If you cancel and later need testing, you'll need to schedule a new appointment through the same portal or by phone.

Cancelling through the LabCorp patient portal

Log into your LabCorp account on their website or mobile app using your username and password. Navigate to "My Appointments" or a similar section — the exact label depends on which version of the portal you're using. Find the appointment you want to cancel and look for a "Cancel" or "Delete" button next to it.

Click that button and confirm the cancellation when the system asks you to verify. You should receive an immediate on-screen confirmation and typically an email confirmation within a few minutes. The appointment will no longer appear on your schedule. If you don't see a cancel option in the portal, your location may require phone cancellation — call the number listed on your confirmation email.

Cancelling by phone

Call the specific LabCorp location where you have your appointment. You can find the phone number on your appointment confirmation email, on the LabCorp website's location finder, or by calling LabCorp's main patient service line. Have your appointment confirmation number or date of birth ready so the staff member can pull up your record quickly.

Tell them you need to cancel and provide the appointment details. They'll remove it from the schedule and may ask why you're cancelling — this is optional information, and you don't have to explain. Ask for a confirmation number or note that the cancellation went through. If you think you might need testing later, ask whether you can reschedule instead of fully cancelling.

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 need to cancel. Bring your appointment confirmation email or card if you have it, though staff can usually find your appointment using your name and date of birth. They'll process the cancellation on the spot.

This method works well if you're already at the location or nearby, but it's slower than calling ahead if you're trying to cancel before your appointment time. If you cancel in person on the day of your appointment, make sure to do it before your scheduled time slot so the location doesn't hold the slot open waiting for you.

What happens to your test results and medical records after cancellation

Cancelling an appointment does not affect any previous test results or medical records LabCorp has on file. Your past results remain in your account and are available to you and your healthcare provider. Cancelling only removes the future appointment from the schedule.

If your doctor ordered the test and you cancel, your doctor's office may follow up asking whether you completed it. Let them know you cancelled and discuss whether you still need the test done. If you do, you'll need to schedule a new appointment.

Rescheduling instead of cancelling

If you want to keep your appointment but change the date or time, you can reschedule through the patient portal or by phone rather than cancelling and starting over. In the portal, look for a "Reschedule" or "Change Appointment" option next to your appointment. By phone, tell the staff member you'd like to reschedule and ask what times are available.

Rescheduling is often faster than cancelling and rebooking separately, because you keep your existing appointment record and don't have to re-enter information. Some locations may have limited availability for rescheduling, especially if you're trying to move your appointment to a very soon date.

No-show fees and cancellation policies

LabCorp's no-show policy varies by location and by whether your test was ordered by a doctor or self-ordered. Generally, if you don't show up for an appointment and don't cancel at least 24 hours beforehand, you may be charged a no-show fee. This fee is not a LabCorp charge in most cases — it comes from the healthcare provider or facility that ordered the test.

Cancelling well in advance protects you from this fee. If you're unsure whether your location charges a no-show fee, ask when you call to cancel or check your appointment confirmation email, which sometimes lists the policy. If you're cancelling very close to your appointment time and worried about a fee, mention this to the staff member — they can note the reason in your record.

Frequently Asked Questions

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

No, cancelling itself is free. However, if you don't show up for an appointment without cancelling at least 24 hours in advance, some locations may charge a no-show fee. Cancelling ahead of time prevents this charge.

Can I cancel an appointment the same day it's scheduled?

Yes, but call the location directly rather than using the online portal, since phone cancellations process faster. Same-day cancellations may trigger a no-show fee depending on your location's policy, so ask about this when you call.

What if I forgot my login information for the LabCorp portal?

Click "Forgot Password" on the login page and follow the reset instructions sent to your email. If you don't have an account, you can still cancel by calling the location directly with your name and date of birth, or by visiting in person.

Do I need to tell my doctor if I cancel a test they ordered?

It's a good idea to let your doctor's office know, especially if the test was important for diagnosis or monitoring. They may want to reschedule it or discuss whether you still need it done. Your cancellation won't automatically notify them.

Can I cancel and reschedule for a different location?

Yes. Cancel your current appointment, then schedule a new one at a different LabCorp location through the portal or by phone. You'll need to provide the new location's details when you book.