How to Find Quest Diagnostics Locations and Schedule an Appointment

How to find a Quest Diagnostics location near you and book an appointment

Quest Diagnostics operates more than 2,000 patient service centers across the United States. To find one near you and schedule an appointment, you can use their location finder on their website, call their scheduling line, or walk in without an appointment at most locations. The fastest method is usually the online location finder, which shows hours, services offered, and whether you need an appointment for your specific test.

Most Quest locations accept both scheduled appointments and walk-ins, though some services or times may require you to book ahead. If your doctor ordered lab work, you will need to bring the order with you — either printed or on your phone. Quest can also look up orders by your name and date of birth if you do not have the paperwork.

Key Takeaways

• Quest's online location finder at questdiagnostics.com shows which services each center offers and whether appointments are needed for your test type.
• You can schedule appointments online, by phone at 1-800-222-0446, or by walking into most locations without advance booking.
• Bring your doctor's lab order, insurance card, and photo ID; Quest can look up orders by name and date of birth if you do not have the paperwork.
• Wait times vary by location and time of day — early morning and weekday visits typically have shorter lines than afternoons and weekends.
• Some specialized tests may require fasting or advance scheduling, so check the location's details or call ahead if your test has special instructions.

Using the Quest Diagnostics website to find locations and book online

Go to questdiagnostics.com and select "Find a Location" from the main menu. Enter your zip code, city, or address. The map will show all nearby centers with their addresses, phone numbers, hours, and parking information. Each location listing shows which services are available there — not all centers offer every test type.

If you want to schedule an appointment through the website, click on the location you prefer and look for the "Schedule an Appointment" button. You will enter your date of birth, the type of test your doctor ordered, and your preferred date and time. The system will show you available slots and confirm your appointment when ready. You will receive a confirmation email and can check in online before your visit.

The website also lets you upload your doctor's order before you arrive, which speeds up check-in. If you do not have your order number or do not know which test you need, call the location directly or contact Quest's customer service line.

Scheduling by phone or walking in without an appointment

Call Quest Diagnostics at 1-800-222-0446 to speak with a scheduling representative. Have your zip code or preferred location ready, and tell them what test your doctor ordered. They will find available appointment times and book you for a specific date and time. Phone scheduling is useful if you have questions about what to bring, whether you need to fast, or if your test requires special preparation.

Most Quest locations also accept walk-ins during their regular hours. Wait times depend on how busy the center is — early mornings on weekdays typically have the shortest lines. If you walk in, bring your doctor's order, insurance card, and photo ID. The staff will check you in and let you know the expected wait time before you sit down.

What to bring to your Quest Diagnostics appointment

Bring a photo ID (driver's license, passport, or state ID card) and your insurance card. If your doctor gave you a lab order, bring it — either printed or show it on your phone. Quest can look up orders in their system using your name and date of birth, so if you lost the paperwork, the staff can find it during check-in.

Wear loose, comfortable clothing with sleeves that roll up easily if you are having blood drawn. If your test requires fasting (usually for glucose or lipid tests), do not eat or drink anything except water for the time period your doctor specified — typically 8 to 12 hours before the appointment. The location's details page or your doctor's order will note if fasting is required.

Some tests require you to bring a urine sample or other specimen from home. Your doctor's order or the Quest location will tell you if this applies. If you are unsure what to bring or how to prepare, call the location ahead of time.

Canceling or rescheduling a Quest appointment

If you scheduled online, log into your Quest account and select your appointment to cancel or reschedule. You can also call 1-800-222-0446 to make changes by phone. Most locations allow you to reschedule up to 24 hours before your appointment time without penalty.

If you need to cancel, do so as soon as possible so the time slot opens for another patient. If you miss an appointment without canceling, some locations may ask you to reschedule before your next visit, though this varies by center.

Wait times and what to expect during your visit

Wait times at Quest locations vary widely depending on the time of day, day of the week, and how busy that particular center is. Early morning appointments (7 a.m. to 9 a.m.) on weekdays typically have the shortest waits. Afternoons and weekends tend to be busier. If you have an appointment, you will usually be seen within 15 to 30 minutes of your scheduled time, though this is not may provide.

When you arrive, check in at the front desk with your ID and insurance card. You may be asked to complete a brief health questionnaire or update your information. A phlebotomist or lab technician will call you back, perform the test (usually a blood draw, urinalysis, or other specimen collection), and you will be done. Most visits take 10 to 20 minutes from check-in to leaving.

Results are typically available within one to three business days. Quest will send them to your doctor and may also make them available through your online patient portal if you create an account on their website.

Special situations and services at Quest locations

Some Quest centers offer additional services beyond standard lab tests, such as drug screening, occupational health testing, or COVID-19 testing. Not every location offers every service, so check the location details on the website or call ahead if you need something specific.

If you are a minor, a parent or legal guardian must accompany you to the appointment. If you are pregnant, have a bleeding disorder, take blood thinners, or have other medical conditions that affect lab testing, mention this during check-in so the staff can take appropriate precautions.

Quest also works with many employers and insurance companies to offer on-site testing at workplaces or through employer wellness programs. If your employer offers this, you may be able to schedule through your company's benefits portal instead of calling Quest directly.

Frequently Asked Questions

Do I need an appointment or can I just walk in?

Most Quest locations accept both appointments and walk-ins. Appointments are not required for routine tests, but scheduling ahead can reduce your wait time. Some specialized tests or certain times of day may require an appointment, so check your location's details or call ahead if you want to be sure.

What if I do not have my doctor's lab order?

Quest can look up your order in their system using your name and date of birth. Bring a photo ID and your insurance card, and the staff will search for the order during check-in. If no order is found, you will need to contact your doctor's office to have them send it to Quest or provide you with a copy.

How long does it take to get my results?

Most results are available within one to three business days. Quest sends results to your doctor and may also post them to an online patient portal if you create an account on their website. Some routine tests may be available faster; your doctor or the Quest staff can tell you the expected timeline for your specific test.

Can I reschedule my appointment online?

Yes, if you scheduled online, you can log into your account and reschedule directly. You can also call 1-800-222-0446 to reschedule by phone. Most locations allow changes up to 24 hours before your appointment.

What if I have questions about fasting or test preparation?

Your doctor's lab order will note any special instructions like fasting. You can also call the Quest location directly or check the location details on questdiagnostics.com. The staff can answer questions about preparation and let you know if your test requires anything beyond bringing your ID and insurance card.