How to Pay Your Quest Diagnostics Bill Online and by Mail

Quest Diagnostics offers three main ways to pay your bill: online through their patient portal, by phone, or by mail

Quest Diagnostics bills you after lab work is completed. You can pay online at your own pace, call their billing department to pay over the phone, or send a check by mail. The online method is fastest — you'll see your balance when ready and can pay in minutes. Phone and mail payments take longer to process but don't require you to create an account.

Your bill will show the lab tests performed, the amount you owe, and a due date. If you have insurance, Quest bills your insurer first, and you pay only your portion (copay, coinsurance, or deductible). If you don't have insurance, you pay the full lab fee.

Key Takeaways

• Pay online at questdiagnostics.com by logging into your account or creating one with your email and date of birth.
• Call Quest Diagnostics' billing department at 1-866-697-8378 to pay by phone with a debit card, credit card, or bank account.
• Mail a check or money order to the address printed on your bill; include your account number on the check.
• Online payments typically process within one business day, while mailed payments take seven to ten business days.
• If you receive a bill you believe is incorrect, contact Quest billing before paying to dispute the charge.

Paying online through your Quest Diagnostics account

Visit questdiagnostics.com and select "Pay My Bill" or "Billing" from the main menu. If you already have an account, log in with your email and password. If not, you can create one by entering your email address, date of birth, and the last four digits of your Social Security number. Quest will send a verification link to your email.

Once logged in, your bill will appear with the total amount due and the due date. Select the bill you want to pay, review the charges, and choose your payment method — debit card, credit card, or bank account. Enter the payment details and confirm. You'll receive a confirmation number when ready, and the payment will post to your account within one business day.

If you don't remember your password, use the "Forgot Password" link on the login page. Quest will send a reset link to your email. If you can't access your email or have trouble creating an account, call their patient support line at 1-866-697-8378.

Paying by phone

Call Quest Diagnostics' billing department at 1-866-697-8378. Have your bill or account number ready. A representative will pull up your account, confirm the amount due, and ask which payment method you'd like to use: debit card, credit card, or bank account information.

Phone payments are processed the same day you call during business hours (typically 8 a.m. to 8 p.m. Eastern time, Monday through Friday). You'll receive a confirmation number before the call ends. This method works if you don't have internet access or prefer speaking to someone directly.

Paying by mail

Write a check or money order for the amount shown on your bill. On the check, write your Quest Diagnostics account number in the memo line. Include your name and address on the check itself. Mail it to the address printed on your bill — this address varies by region, so do not use a generic Quest mailing address.

Mailed payments take seven to ten business days to reach Quest and post to your account. If your due date is approaching, mail payment is not the fastest option. Keep a copy of your check or a photo of the front and back for your records.

What to do if you can't pay the full amount

If you owe money but cannot pay it all at once, contact Quest Diagnostics' billing department at 1-866-697-8378 before the due date. Explain your situation and ask whether a payment plan is available. Quest may allow you to split the bill into smaller payments over several weeks or months, though this varies by location and the amount owed.

Some bills may also be covered by financial hardship programs if you meet income requirements. The billing representative can tell you whether you might be may be able to access and how to request consideration. Do not ignore a bill — contacting Quest early gives you more options than waiting until the account is sent to collections.

Understanding your bill and charges

Your Quest bill lists each lab test performed, the code for that test, and the charge for each one. If you have insurance, the bill shows what your insurer paid and what you owe as your share. This share is usually a copay (a flat fee like $25), coinsurance (a percentage of the cost), or part of your deductible (the amount you pay before insurance kicks in).

If you don't recognize a charge or believe a test was billed twice, contact Quest before paying. Call 1-866-697-8378 and ask to speak with someone in billing. Have your bill in front of you and be ready to explain which charge you're questioning. Quest can place a hold on your account while they investigate.

What happens if you miss a payment

If your payment is not received by the due date, Quest will send a past-due notice. Continue to pay even after the due date — the bill does not disappear. If the account remains unpaid for 60 to 90 days, Quest may send it to a collection agency, which will then contact you.

A collection account can affect your credit score and appear on your credit report for up to seven years. If you've missed a payment, call Quest at 1-866-697-8378 as soon as possible to arrange payment or a plan. Paying the debt stops collection efforts and prevents further damage to your credit.

Frequently Asked Questions

Can I set up automatic payments for my Quest bill?

Quest does not currently offer automatic recurring payments through their standard patient portal. You must pay each bill manually online, by phone, or by mail. However, some employers or insurance plans may offer bill pay services that can send payments to Quest on your behalf — check with your benefits administrator.

What if I paid online but my bill still shows as due?

Online payments typically post within one business day. If you paid yesterday, check again tomorrow. If more than one business day has passed and the bill still shows as due, log into your account and look for a confirmation number from your payment. Call 1-866-697-8378 with that number so billing can verify the payment was received.

Do I have to create an account to pay online?

You do not have to create an account if you prefer not to. You can pay by phone at 1-866-697-8378 or by mail. However, creating an account takes about five minutes and lets you view all your bills and payment history anytime without calling.

What if I'm disputing a charge on my bill?

Contact Quest billing at 1-866-697-8378 before paying and explain which charge you believe is wrong. Quest can place a temporary hold on that portion of the bill while they investigate. You are not required to pay a charge you genuinely dispute, but the investigation may take several weeks.

Can I pay someone else's Quest bill?

If you are paying for another person's bill, you can pay online using your own payment method — the payment will still post to their account as long as you enter their account number correctly. By phone, tell the representative whose bill you're paying and provide that person's account number. By mail, include the account number on the check so Quest knows which bill to credit.