Quest Diagnostics bills you after your lab work is done, and you can pay online, by phone, or by mail

Quest Diagnostics sends an invoice after your test is complete. The bill arrives by mail or email, depending on what you chose when you checked in. You do not have to pay at the lab itself — Quest bills you later, usually within a few days to a week. You can pay through your Quest account online, call their billing department, mail a check, or set up automatic payments.

The amount you owe depends on your insurance and whether you have met your deductible. If you have insurance, Quest will bill your insurer first, and you will owe only your share — the copay, coinsurance, or deductible amount. If you do not have insurance, you will owe the full lab fee, though Quest sometimes offers discounts if you pay upfront or within a certain window.

Key Takeaways

  • Quest Diagnostics bills you after your test, not before, and sends the invoice by mail or email within a few days.
  • You can pay online through your Quest account, by phone at the number on your bill, by mailing a check, or by setting up automatic payments.
  • Your bill shows what your insurance paid and what you owe out of pocket, so check it against your insurance explanation of benefits.
  • If you cannot pay the full amount, Quest offers payment plans for balances over a certain threshold — call the number on your bill to ask about options.

Paying online through your Quest account

The easiest way to pay is through Quest's online patient portal. Go to questdiagnostics.com and log in with your username and password. If you do not have an account, you can create one using your email and date of birth. Once you are logged in, look for "Billing" or "My Bills" in the menu.

Select the bill you want to pay and review the amount. Quest will show you what your insurance paid, what you owe, and the due date. Click "Pay Now" and enter your payment method — debit card, credit card, or bank account. Quest accepts Visa, Mastercard, American Express, and Discover. If you pay by bank account, the payment may take a few business days to post; card payments usually post within one business day.

Keep your receipt or confirmation number. Quest will send you an email confirmation, but save the number in case you need to prove you paid.

Paying by phone

Call the phone number on your bill — it is usually on the top right or bottom of the invoice. Have your bill in front of you and be ready to provide your account number and date of birth. A representative will tell you the amount due and ask how you want to pay.

Quest accepts debit cards, credit cards, and bank account information over the phone. The call is usually quick, and you will get a confirmation number before you hang up. Write down the number and the date and time of the call. If you have questions about the charges, the representative can explain what each line item is for.

Mailing a check or money order

Your bill includes a payment stub with a mailing address. Write your account number on the check or money order, tear off the stub, and mail both together. Use the address printed on the stub — do not send payment to the lab location itself.

Mail takes time to arrive and process. Quest usually receives checks within 7 to 10 business days, and posting to your account can take another few days. If your due date is soon, mail is not the fastest option. Keep a copy of the check front and back for your records.

Setting up automatic payments

If you have recurring lab work or multiple bills, you can set up automatic payments through your Quest account. Log in, go to Billing, and look for "Autopay" or "Automatic Payments." You will authorize Quest to charge your card or bank account on a date you choose — usually the due date or a few days before.

You can change or cancel automatic payments anytime through your account. If you cancel, make sure you pay any remaining balance manually so it does not go to collections. Automatic payments are useful if you forget due dates, but review your bills before they are charged to catch any errors.

Payment plans for larger bills

If your bill is large and you cannot pay it all at once, Quest offers payment plans. The threshold varies, but typically you can set up a plan for balances of $500 or more. Call the number on your bill and ask about payment plan options. A representative will tell you how many months you can spread the payments across and whether there is interest or a setup fee.

Payment plans are usually interest-free if you stick to the schedule. Missing a payment can end the plan and send your account to collections, so make sure you can commit to the monthly amount before you agree. Get the plan terms in writing or save the confirmation number and the representative's name.

What to do if you disagree with the bill

If the amount seems wrong, do not ignore it. First, check your insurance company's explanation of benefits to see what they paid and what they say you owe. Sometimes Quest and your insurance disagree on the amount, and you should not pay until it is resolved.

Call Quest's billing department and explain the discrepancy. Have your bill, your insurance EOB, and any other paperwork in front of you. Quest can contact your insurance to verify the correct amount. This process can take a few weeks, but it is worth doing before you pay. Ask for a reference number and the name of the person you spoke with.

Frequently Asked Questions

Do I have to pay my Quest bill right away?

No. Quest usually gives you 30 days from the bill date to pay, though the exact important date is on your invoice. If you do not pay by the due date, Quest may charge a late fee and report the debt to a collection agency. If you need more time, call and ask about a payment plan before the due date passes.

What if I lost my bill or did not get one?

Log into your Quest account online and look under Billing to see all your invoices. You can view, print, and pay from there. If you do not have an account, create one at questdiagnostics.com. If you still cannot find your bill, call the number on any previous Quest paperwork or call Quest's main line and ask for billing.

Can I pay someone else's Quest bill?

Yes, if you have their account number and authorization. You can pay online using their account number, or call and provide it over the phone. Some people set this up for elderly parents or dependents. Make sure the account holder knows you are paying on their behalf.

What happens if I do not pay my Quest bill?

Quest will send reminder notices and may charge late fees. If the bill remains unpaid for several months, Quest can send it to a collection agency, which will damage your credit and may pursue legal action. If you are having trouble paying, contact Quest before it reaches that point — they may offer a payment plan or financial hardship options.

Does Quest accept insurance as payment?

No. Quest accepts payment from you, and they bill your insurance separately. Your insurance pays Quest directly, and you pay Quest for your portion. You cannot use your insurance card to pay a Quest bill.