Patient Billing FAQ
Patient Billing FAQ

Start here to find answers to commonly asked questions about LabCorp’s patient invoices, the online bill payment service, and issues concerning your insurance

General Information

What is Laboratory Corporation of America?
Laboratory Corporation of America (LabCorp) is a clinical laboratory that performs tests at the request of a licensed physician or other person authorized by law to order laboratory testing and receive testing results.

What is the telephone number for LabCorp Patient Billing?
The toll-free telephone number for Patient Billing is 800-845-6167.

What are LabCorp Patient Billing hours of operation?
8:00 AM to 5:00 PM.

Why have I received a bill from LabCorp?
LabCorp received information from either your ordering physician or your insurance company indicating that you are responsible for all or part of the fees for testing services we provided. For more information about a bill you received from LabCorp, please contact Patient Billing at 800-845-6167.

How often will LabCorp send me a bill?
LabCorp will send you a bill approximately once a month until the balance due for services we performed has been paid.

Will LabCorp refuse service if I have an outstanding balance? 
LabCorp reserves the right to refuse service if you have a past due balance. When you visit a LabCorp patient service center, please be aware as part of the sign-in process you will be advised if you have an outstanding balance for previous testing services. You will be asked to pay the balance in full (or a minimum amount) before we collect a specimen or continue with the current service. If you have any questions, please call LabCorp Patient Billing at 800-845-6167. 

How does billing work if my insurance provider is not contracted with LabCorp?
You should check with your insurance provider to see if LabCorp is a contracted laboratory. 

What methods of payment does LabCorp accept?
If you receive a bill from LabCorp, you may make a payment using one of the following methods:

  • Website: Visit, available 24 hours a day, 7 days a week.
  • Toll-free telephone number: Call the automated voice response system at 800-845-6167, available 24 hours a day, 7 days a week.
  • Mail: Send your payment to the address shown on your bill.
  • Patient service centers: You may make payments in person at any of our patient service centers.

Cash, money orders, personal checks, and all major credit cards are acceptable forms of payment. Please remember to attach the stub from your bill when mailing in your payment. If paying by check, include your 8-digit invoice number on the check.

Does LabCorp have a financial hardship program? 
LabCorp offers programs to address those patients who have true financial needs, such as: 

  • Patient-specific payment plans.
  • LabAccess Partnership (LAP) program (requires payment in full at time of service). See additional information about the LAP program in this FAQ.

Please call LabCorp Patient Billing at 800-845-6167 for more information about these payment alternatives.

Who should I contact if I have questions about my test results?
LabCorp sends a results report to the physician (or other authorized person) who requested the test. LabCorp Beacon®:Patient is a secure portal that allows you to view and download your test results. To create an account, visit

Please contact the physician who ordered your test if you have questions about your test results.

Online Bill Payment

Why did I get an error message that says, “Invoice Not Found?”
Please recheck your 8-digit invoice number, and be sure to enter the number exactly as it appears on your bill. If you continue to get the same message after reentering your invoice number, please contact LabCorp Patient Billing at 800-845-6167.

Why does my balance still show the same amount due after I submit my payment online?
LabCorp posts payments within 24 to 48 hours. If you have made your payment and you are unsure whether the payment has posted, contact LabCorp Patient Billing at 800-845-6167.


How does billing work if I have insurance? 
LabCorp will file claims directly to Medicare, Medicaid, and many insurance companies and managed care plans. Before you have lab tests performed, please make sure:

  • Your insurance information is up to date.
  • LabCorp is a contracted laboratory for your insurance company. (Contact your insurance company for information.)

Once your insurer has processed your claim, you will receive an explanation of benefits (EOB) from your insurer informing you of the amount it will pay for your laboratory services.

  • The EOB is not a bill, but it may indicate that a balance remains which is your responsibility. That balance may include your copayment, deductible, or other costs outlined in your terms of coverage. If you have a question about your EOB or your terms of coverage, contact your insurance company.
  • Your insurer will inform LabCorp about any balance you owe, and we will send you a bill for that amount.

How can I find out if my insurance company has paid a claim?
Please read your bill carefully. A line item adjustment will be printed on the first bill you receive from LabCorp if we have received payment from your insurance company. If you are still uncertain, you can either contact your insurance company directly or contact LabCorp Patient Billing at 800-845-6167.

How does billing work if I have more than one insurance plan? 
If you are covered by more than one insurance plan, your primary insurer will process your claim first, and then any remaining balance will be billed to the secondary insurer. If you receive a bill from LabCorp before you receive an explanation benefits from your secondary insurance, please contact Patient Billing at 800-845-6167 to confirm your secondary insurance information was received and a claim was filed. 

Why didn't my insurance company pay a claim?
You should have received an Explanation of Benefits (EOB) from your insurance company that explains in detail the services as either paid or denied. If you need further assistance determining the reason(s) why your insurance company did not pay for your services, please contact your insurance carrier directly for information about its coverage policies.

How does LabCorp obtain the diagnosis code information related to a test ordered?
LabCorp relies on the ordering physician to submit the diagnosis code information at the time of the test order.  Please contact your physician's office if your insurance company denied a claim due to the diagnosis code. 

How long will it take before my insurance company responds to a claim?
Please allow your insurance company 4 to 6 weeks to process your claim.

What should I do if the information shown on the LabCorp bill does not match the information I’ve been provided by my insurance company? 
If you have received an Explanation of Benefits (EOB) from your insurance company that shows different information than the bill you received from LabCorp, please forward a copy of your EOB to LabCorp. You may fax this information to 866-227-2939 (toll free) or mail a copy of the EOB to:

PO Box 2240
Burlington, NC 27216-2240

What if I do not have health insurance?
If you do not have insurance or your health care benefits do not cover clinical laboratory testing services, you will have to pay for the tests performed by LabCorp before specimen collection services are performed.

  • An automated payment collection process is available at many of our patient service centers, as well as certain doctor’s offices where a phlebotomist (person who performs blood draws) is on site to perform specimen collection services for LabCorp.
  • Certain routine tests are available at discounted prices through the LabAccess Partnership program. To take advantage of this program, you must have your specimen collected at a LabCorp patient service center, and you must pay for your test in full at the time of service.

Sign & Go, LabCorp’s Credit Card Preauthorization Program

Does LabCorp offer a credit card preauthorization program? 
LabCorp makes it easy for you to pay any balance you may owe by presenting your credit card or health care savings account (HSA) card when you check into a LabCorp patient service center to have a specimen collected. This program is called Sign & Go.

Will I receive notification from LabCorp prior to my card being charged? 
You will not receive a notification from LabCorp prior to your card being charged. You will receive a confirmation letter after your card has been charged. The letter will include the dollar amount charged, the date the card was charged, and the confirmation number. 

Is it safe to submit my card information to LabCorp?
Your credit/HSA card information is safe with us. LabCorp secures this data and protects it within our network. We have adopted payment card industry security standards, and we will destroy your card information after a charge has been processed or your insurance company has notified us that you are not responsible for any charges.

LabAccess Partnership (LAP) Program

What is the LabAccess Partnership (LAP) program? 
LabCorp makes available discounted fees on a menu of routine clinical tests for patients who are uninsured or whose health care benefits do not cover clinical laboratory testing. 

Who can use the LAP program?
The LAP program is available for self-pay patients who are uninsured or whose health benefits exclude coverage for clinical laboratory testing services. 

How can patients participate in the LAP Program?
Patients must present their test request paperwork at a LabCorp patient service center (PSC) for specimen collection. Please note, to access the LAP program, patients must pay the discounted fees of the ordered laboratory tests in full at the time of service. Patients with unpaid laboratory charges will not be eligible for the program until overdue balances are satisfied. 

Alternate Payment Programs

Does LabCorp offer alternate payment programs? 
Our Patient Billing representatives are trained to assist patients with their payment questions and are available Monday through Friday at 800-845-6167. Payment plans are available. 


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