Where your Quest Diagnostics payment goes

When you pay a Quest Diagnostics bill, your payment goes to Quest Diagnostics Clinical Laboratories, Inc., the company that performed your lab work. Quest does not forward your payment to another entity — the money stays with Quest to cover the cost of the test, the lab facility, and the technician who drew your blood or collected your sample.

If you had insurance at the time of your test, Quest has already billed your insurance company. What you owe is your portion: the copay, coinsurance, or deductible that your insurance plan did not cover. If you had no insurance, you owe the full lab fee that Quest charged.

Quest sends bills by mail and also makes them available through your online account. You can view your balance, see which tests were performed, and check what your insurance paid versus what you still owe.

Key Takeaways

  • Quest Diagnostics bills you directly for the portion of lab costs your insurance did not pay, or the full amount if you had no insurance.
  • You can pay by mail, phone, online through your Quest account, or in person at a Quest patient service center.
  • Quest accepts credit cards, debit cards, and bank account transfers, but payment methods vary slightly by how you choose to pay.
  • If you cannot pay the full balance, Quest offers payment plans that let you spread the cost over several months with no interest.
  • Unpaid bills may be sent to a collection agency after 120 to 180 days, which will damage your credit score.

Paying online through your Quest account

The fastest way to pay is through Quest's online patient portal. Go to questdiagnostics.com, click "Sign In" at the top right, and log in with your username and password. If you do not have an account, you can create one using your date of birth and the account number from your bill.

Once logged in, select "Billing" or "My Bills" from the menu. You will see your current balance and a list of charges. Click the button to pay now. Quest will ask you to enter a credit card, debit card, or bank account number. The payment processes when ready, and you will receive a confirmation number by email.

Online payments through the Quest portal are free and do not carry a processing fee. Your payment should appear on your account within one business day.

Paying by phone or mail

To pay by phone, call Quest's billing department at 1-866-QUEST-99 (1-866-787-3899). Have your bill or account number ready. A representative will confirm your balance and take your credit card or debit card information over the phone. Phone payments are processed the same day you call.

To pay by mail, write a check or money order payable to "Quest Diagnostics" and send it to the address printed on your bill. Include your account number on the check so Quest can match the payment to your account. Mail payments take 7 to 10 business days to reach Quest and post to your account, so mail early if your bill has a due date.

Do not send cash by mail. If you must pay in person, you can visit a Quest patient service center and pay at the front desk with cash, check, or card — ask for a receipt.

Setting up a payment plan if you cannot pay in full

If your bill is more than you can pay at once, Quest offers payment plans with no interest. Call 1-866-787-3899 and ask to speak with a billing representative about a payment arrangement. They will ask how much you can pay each month and how many months you need.

Quest typically allows payment plans of 3 to 12 months, depending on your total balance. Once you agree on a plan, you will receive a written confirmation by mail showing your monthly payment amount and due date. You can make each payment online, by phone, or by mail using the same methods described above.

If you miss a payment on your plan, Quest may cancel the arrangement and demand the full remaining balance. Contact billing when ready if you cannot make a scheduled payment — they may be able to adjust your plan rather than send your account to collections.

What happens if you do not pay

Quest typically sends reminder notices at 30, 60, and 90 days past due. After 120 to 180 days without payment, Quest sells your debt to a third-party collection agency. Once that happens, the collection agency owns your debt and will contact you directly by phone, mail, or email.

An unpaid medical debt reported to a collection agency will appear on your credit report and lower your credit score. This affects your ability to borrow money, rent an apartment, or sometimes even get hired for a job. The debt remains on your credit report for seven years from the date it was first reported as delinquent.

If you receive a collection notice, you have the right to dispute the debt in writing within 30 days. Send a letter to the collection agency asking them to prove the debt is yours. If you cannot pay, some collection agencies will negotiate a settlement for less than the full amount owed.

Understanding your Quest bill

Your Quest bill shows the test or tests performed, the date of service, and the amount Quest charged. Below that, it shows what your insurance paid (if you had insurance) and what you owe. The amount you owe is labeled "Patient Responsibility" or "Amount Due."

If you see charges you do not recognize, call Quest at 1-866-787-3899 and ask for an itemized explanation. Quest can tell you which doctor ordered each test and why. If you believe a charge is wrong — for example, if you were told a test would be free but you were billed — ask Quest to review the charge and provide documentation of what you were told at the time of service.

Keep your bill and any payment confirmations in a safe place. If a collection agency later contacts you about this debt, you will need proof of what you paid and when.

Frequently Asked Questions

Can I pay my Quest bill with insurance?

No. Your insurance company pays Quest directly for the portion of the test they cover. You pay Quest only for the amount your insurance did not pay — your copay, coinsurance, or deductible. If you had no insurance when the test was done, you owe the full amount Quest charged.

Does Quest charge a fee to pay online?

No. Paying through the Quest online portal is free. Some third-party payment services charge fees, but Quest's own website does not. Paying by phone or mail is also free.

What if I lost my bill and do not know my account number?

Log into your Quest account online at questdiagnostics.com and view your billing history. If you do not have an online account, call 1-866-787-3899 and provide your date of birth and the phone number or address on file. A representative can look up your account and tell you what you owe.

Can Quest sue me if I do not pay?

Quest rarely sues individual patients, but collection agencies sometimes do. If a collection agency files a lawsuit and wins, they can garnish your wages or place a lien on your bank account. If you receive a court notice, respond to it — ignoring it makes the judgment easier to obtain.

Will paying my Quest bill help my credit score?

Paying a medical bill on time does not help your credit score, but letting it go unpaid and go to collections will hurt it significantly. Medical debt in collections stays on your credit report for seven years. Paying it off does not remove it, but it may improve your score slightly over time.