How to Schedule an Appointment at Quest Diagnostics

The fastest way to book is online or by phone

You can schedule a Quest Diagnostics appointment through their website at questdiagnostics.com, by calling 1-866-QUEST-01 (1-866-787-3801), or by walking into a patient service center without an appointment. Online booking is usually the quickest — you'll see available times at your nearest location and confirm in a few minutes. Phone booking takes longer because you're waiting for a representative, but it's useful if you have questions about what tests you need or which location works best for you.

Walk-in appointments are available at most Quest locations, though wait times vary by time of day and location. Early mornings, typically between 7 and 9 a.m., usually have shorter waits. If you know you'll need a test, scheduling ahead saves you from standing in line.

Key Takeaways

• Book online at questdiagnostics.com, by phone at 1-866-787-3801, or walk in without an appointment at any patient service center.
• You'll need your insurance card, a photo ID, and any lab order or requisition your doctor provided.
• Fasting requirements depend on which tests you're having — your appointment confirmation will tell you what to do beforehand.
• Bring a list of medications you take, because some can affect test results.
• Most results are available online within 24 to 48 hours, though some specialized tests take longer.

What information you need before you book

Have your insurance card ready when you schedule. Quest will ask for your member ID and group number so they can verify coverage and tell you what your out-of-pocket cost might be. If you don't have insurance, Quest can still run your tests — you'll pay out of pocket, and the cost depends on which tests you're having.

If your doctor ordered specific tests, have that lab order or requisition in front of you. It will have a code or name for each test, and Quest needs to know exactly what your doctor wants. If you're not sure what tests you need, call Quest before booking and they can help you figure it out based on your symptoms or reason for testing.

You should also know whether you need to fast before your appointment. Some blood tests require you to not eat or drink anything (except water) for 8 to 12 hours beforehand. Your appointment confirmation will tell you if fasting is required for your specific tests. If you're unsure, ask when you book.

Scheduling online step by step

Go to questdiagnostics.com and look for the "Schedule an Appointment" or "Book Now" button on the homepage. Enter your zip code or city to find locations near you. The site will show you which patient service centers are open and what times have availability.

Select the location and date that work for you, then choose your time slot. You'll be asked to enter your name, date of birth, phone number, and email address. Have your insurance card handy — you'll enter your member ID and group number. If you have a lab order from your doctor, you can upload it or enter the test codes at this point.

Review your appointment details, confirm your contact information, and you're done. You'll receive a confirmation email with your appointment time, location address, and parking or check-in instructions. Save this email or take a screenshot — you'll need it when you arrive.

What to bring to your appointment

Bring your photo ID (driver's license, passport, or state ID) and your insurance card. If you have a printed lab order from your doctor, bring that too — it speeds up check-in. If your doctor sent the order electronically to Quest, you don't need to bring a copy, but having one doesn't hurt.

Wear loose or short-sleeved clothing if you're having blood drawn. This makes it easier for the phlebotomist to access your arm. If you tend to feel faint during blood draws, let the staff know when you check in — they can have you lie down or sit in a reclined chair.

Bring a list of medications and supplements you take, including over-the-counter drugs and vitamins. Some medications can affect test results, and Quest staff may ask about them. If you've fasted, bring water or a light snack to have after your appointment — eating something after fasting helps prevent dizziness.

How long the appointment takes

A typical blood draw takes 10 to 15 minutes from check-in to leaving. If you're having multiple tests or a more complex procedure, add another 10 to 15 minutes. Walk-in appointments may have a wait before you're seen, especially during morning hours or on weekdays.

If you're having a urine test or other non-blood test, the process is faster — usually 5 to 10 minutes total. Some tests, like glucose tolerance tests, require you to stay longer because you drink a solution and have blood drawn at specific intervals over a couple of hours.

When and how you'll get your results

Most routine blood test results are ready within 24 to 48 hours. You can view them online through your Quest account on questdiagnostics.com — you'll need to create a login if you don't have one already. Results also go to your doctor's office, so your doctor can review them and contact you if anything needs follow-up.

Some specialized tests take longer — genetic tests, cultures, or complex panels may take 5 to 10 business days. Quest will tell you the expected turnaround time when you schedule or when you check in. If your results are taking longer than expected, you can call Quest customer service to ask about the status.

If a result is abnormal or needs explanation, your doctor will usually call you. Don't assume no news is good news — check your online account or call your doctor's office if you haven't heard back within a few days.

Frequently Asked Questions

Can I schedule an appointment for someone else?

Yes, you can schedule for a family member or dependent. You'll need their date of birth, insurance information, and any lab order from their doctor. When they arrive, they'll need to bring their own photo ID and insurance card to check in.

What if I need to reschedule or cancel?

You can cancel or reschedule through your confirmation email, on the Quest website, or by calling 1-866-787-3801. If you cancel, try to do it at least a few hours before your appointment so the time slot opens up for someone else.

Do I need a doctor's order to get tested at Quest?

No. You can order certain tests directly through Quest without a doctor's order — these are called "direct access" or "self-ordered" tests. However, most insurance plans cover tests only if a doctor ordered them. Check with your insurance or Quest about what's covered before you book.

What if I'm nervous about blood draws?

Tell the phlebotomist when you check in. They can have you lie down, let you look away during the draw, or give you a few minutes to calm down first. Staying hydrated and eating a light meal beforehand also helps. If you've had problems before, mention it — staff are used to this and won't rush you.

Can I eat or drink before my appointment?

It depends on which tests you're having. Some tests require fasting (no food or drink except water for 8 to 12 hours), while others don't. Your appointment confirmation will specify. If you're unsure, call Quest before your appointment and ask about your specific tests.