How to Confirm Your Quest Diagnostics Appointment

What confirmation means and why Quest sends it

When you book a Quest Diagnostics appointment online or by phone, you'll receive a confirmation — usually by email or text within a few minutes. This message contains your appointment date, time, location, and a confirmation number. It's your proof that the appointment is scheduled and tells you what to bring and where to go.

Quest sends confirmations so you have the details in writing and so the lab knows you're coming. If you don't receive one within an hour of booking, check your spam folder or contact the location directly to make sure the appointment went through.

Key Takeaways

• Your confirmation email or text arrives within minutes of booking and includes your confirmation number, appointment time, location address, and what to bring.
• Save your confirmation number — you'll need it when you arrive at the lab, and Quest customer service uses it to look up your appointment.
• If you don't receive a confirmation within an hour, check your spam folder or call the lab location directly to verify the appointment exists.
• Most confirmations include instructions about fasting, medications, or documents to bring; read these carefully before your appointment date.
• You can reschedule or cancel through the confirmation email link, by logging into your Quest account online, or by calling the location.

What information is in your confirmation

Your Quest confirmation includes several pieces of information you'll need on appointment day. At the top is your confirmation number — a unique code that identifies your appointment. Below that you'll see the date and time, the specific Quest location address, and parking or entrance instructions if the lab is in a larger building.

The confirmation also lists any pre-appointment instructions that apply to your tests. For blood work, this might include "fast for 12 hours" or "take your regular medications as scheduled." For drug screening or other tests, it may say "bring photo ID" or "do not eat or drink for 30 minutes before arrival." Read these carefully — following them affects whether your test results are valid.

At the bottom of most confirmations is a link to reschedule or cancel, your lab's phone number, and sometimes a note about what documents to bring (insurance card, photo ID, or a lab order from your doctor).

Where to find your confirmation if you can't locate it

If you booked online through Quest's website or app, log back in and go to "My Appointments" or "Upcoming Appointments." Your scheduled appointment should appear there with all the same details as your email or text. You can take a screenshot or print this page to bring to the lab.

If you booked by phone and never received an email or text, check your spam or junk folder — confirmations sometimes land there. If it's not there, call the Quest location where you booked. Have your name, date of birth, and the phone number you used to book ready. The staff can look up your appointment and resend the confirmation or read the details to you over the phone.

You can also log into your Quest account on their website if you created one during booking. Your appointment will show in your account dashboard even if the email didn't arrive.

How to reschedule or cancel using your confirmation

Most confirmation emails include a link that says "Reschedule" or "Manage Appointment." Click that link and you'll be taken to a page where you can pick a new date and time or cancel entirely. This is usually the fastest way to make changes.

If the link doesn't work or you received a text confirmation instead, log into your Quest account online, find your appointment, and select the reschedule or cancel option. You can also call the lab location directly — have your confirmation number ready so they can pull up your appointment quickly.

If you cancel, Quest will send you a cancellation confirmation. If you reschedule, you'll receive a new confirmation with your updated appointment details. Keep both confirmations until your appointment is complete.

What to do if your confirmation has an error

If your confirmation shows the wrong date, time, or location, contact the Quest location listed in the confirmation right away. Don't assume the error will sort itself out — the lab needs to know so they can correct their records and make sure you're scheduled at the right place and time.

Call the location's phone number (listed in the confirmation) and give them your confirmation number and name. They can verify what's in the system and either correct it or rebook you. If the error was Quest's mistake, they won't charge you a cancellation fee for rebooking.

If you booked through a doctor's office or employer and received a confirmation from Quest, but the details don't match what your doctor told you, contact your doctor's office first — they may have sent the order with different instructions than what appears in your confirmation.

Preparing for your appointment using confirmation details

Your confirmation is your checklist for appointment day. The night before, review the pre-appointment instructions. If you need to fast, set a reminder for when to stop eating and drinking. If you're supposed to bring documents, gather them and put them with your confirmation number (written on a piece of paper or saved on your phone).

Arrive 10 to 15 minutes early. Bring your confirmation number, photo ID, and insurance card. If your confirmation mentioned a lab order from your doctor, bring that too — some tests require it. If you're unsure whether you need anything else, call the location the day before and ask.

If something changes before your appointment — you get sick, can't make it, or need to reschedule — use the link in your confirmation or call the location as soon as you know. This helps Quest manage their schedule and reduces wait times for other patients.

Frequently Asked Questions

Do I need to bring my confirmation to the lab?

You don't need the physical email or text, but you do need your confirmation number. Write it down or have it ready on your phone. The lab will ask for it when you check in, along with your photo ID and insurance card.

What if I received a confirmation but never actually booked an appointment?

Contact Quest immediately using the phone number in the confirmation. This could be a mistake, or someone may have booked using your information. Quest can cancel the appointment and help you secure your account if needed.

Can I change my appointment time using the confirmation link?

Yes. Most confirmations include a reschedule link that takes you to available time slots at that location. If the link doesn't work, log into your Quest account online or call the location directly with your confirmation number.

How long does a confirmation stay valid?

Your confirmation is valid until your appointment date. After your appointment is complete, you can discard it. If you reschedule, your old confirmation is no longer valid — use only the new one.

What if my confirmation says to fast but my doctor didn't mention fasting?

Contact your doctor's office or the Quest location listed in your confirmation. Fasting requirements depend on which tests you're having. It's better to clarify before your appointment than to show up unprepared and have to reschedule.