Quest Diagnostics bills you after your lab work is done, and you can pay online through their patient portal, by phone, or by mail
Quest Diagnostics sends a bill to your home address after your test results are processed. You do not have to wait for paper mail — you can pay the bill online through Quest's patient account portal, which is the fastest way to settle what you owe. You can also call their billing department or mail a check if you prefer not to use the portal.
The amount you owe depends on your insurance coverage and what tests were ordered. If you have insurance, Quest bills them first, and you pay only your share (your copay, coinsurance, or deductible). If you do not have insurance, you pay the full lab fee. Either way, you can see your bill and payment options online before the paper statement arrives.
Key Takeaways
- You can pay a Quest bill online by logging into your patient account at questdiagnostics.com and selecting the billing or payment section.
- Quest accepts credit cards, debit cards, and bank account transfers online, but does not charge a fee for online payments.
- If you do not have an online account yet, you can create one using your Social Security number and date of birth, or call Quest billing at 1-866-697-8378 to pay by phone.
- Your bill shows up in your online account within a few days of your test being processed, before the paper bill arrives in the mail.
- If you cannot pay the full amount right away, you can contact Quest's billing department to ask about payment plans.
Setting up your Quest patient account
To pay online, you need a Quest patient account. If you have not created one yet, go to questdiagnostics.com and look for the "Sign In" or "Create Account" button. You will need your Social Security number, date of birth, and the phone number or email address on file with Quest. The account creation takes a few minutes and is free.
Once you are logged in, your test results and bills appear in the same portal. You can see what tests were done, what the lab charged, what your insurance paid, and what balance remains. This is the same place where you can view lab results after they are ready.
How to pay through your online account
After you log in, look for a section labeled "Billing," "Payments," "My Bills," or "Account Balance" — the exact wording varies depending on when Quest updated their portal. Click on the bill you want to pay. The page will show the amount due and the date the bill was created.
Select "Pay Now" or "Make a Payment." Quest will ask you to choose a payment method: credit card, debit card, or bank account (ACH transfer). Enter your payment information and the amount you want to pay. You can pay the full balance or a partial amount. Quest does not charge a fee for online payments, so the amount you enter is exactly what comes out of your account.
After you submit the payment, you will see a confirmation number on screen. Write it down or take a screenshot. The payment usually posts to your account within one business day for card payments and two to three business days for bank transfers.
Paying by phone or mail if you do not use the portal
If you do not want to set up an online account, you can call Quest's billing department at 1-866-697-8378. A representative can look up your bill using your name, date of birth, and Social Security number, and take payment over the phone by credit card, debit card, or bank account. This method works the same way as online payment and has no additional fee.
You can also mail a check to the address printed on your paper bill. Write your account number or the bill number on the check. Mail takes longer — allow at least one week for the check to arrive and be processed — so use this method only if you have time before any payment deadline.
What happens if you do not pay right away
Quest does not charge interest on unpaid balances the way a credit card does, but they will send you reminder notices if your bill stays unpaid. After 30 days, they may send your account to a collection agency, which will report the debt to credit bureaus and can affect your credit score.
If you cannot pay the full amount, contact Quest's billing department before the bill becomes overdue. They can sometimes set up a payment plan that lets you pay in smaller amounts over time. This keeps the account from going to collections and gives you a clear schedule to pay off what you owe.
Understanding what you are being charged
Your Quest bill shows the lab fee for each test, what your insurance paid (if you have coverage), and what you owe. The lab fee is set by Quest and does not change based on your insurance. What changes is how much of that fee you pay versus how much your insurance covers.
If you have insurance with a deductible, you may owe the full lab fee until you meet your deductible for the year. If you have coinsurance, you pay a percentage of the fee (for example, 20 percent) and insurance pays the rest. If you have a copay, you pay a flat amount regardless of the total fee. Check your insurance card or call your insurance company if you do not understand why your bill is the amount it is.
Frequently Asked Questions
Can I set up automatic payments so I do not have to pay each bill manually?
Quest's standard patient portal does not offer automatic recurring payments. You have to log in and pay each bill when it arrives. However, if you set up a payment plan through their billing department, they may be able to arrange automatic withdrawals from your bank account for the scheduled payments.
What if I paid online but my bill still shows as due?
Online payments take one to three business days to post, depending on your payment method. If more than three business days have passed and the payment still does not show, log back into your account and look for a confirmation number from your payment. Call Quest billing at 1-866-697-8378 with that number to confirm the payment was received.
Do I have to pay the bill right away, or can I wait?
There is no immediate deadline, but the sooner you pay, the better. Quest sends reminder notices after 30 days, and unpaid bills can go to a collection agency after 60 to 90 days, depending on your state. Paying within 30 days keeps the account in good standing.
What if I think the bill is wrong?
Call Quest's billing department at 1-866-697-8378 and explain what you think is incorrect. They can review the charges, check what your insurance paid, and correct errors. Do not ignore the bill while disputing it — continue making payments on the amount you know you owe to avoid collection action.
Can I pay someone else's Quest bill online?
You can pay another person's bill only if you have access to their patient account, which requires their login information. If you want to pay a family member's bill without their password, call Quest billing and ask if they allow third-party payments. Some do, but they may require written authorization from the account holder.