How to Schedule a Lab Test at LabCorp

The fastest way to book a LabCorp appointment

You can schedule a LabCorp appointment online through their website, by phone, or by walking into a patient service center without an appointment. The online route is usually fastest — you pick your location, choose an available time slot, and confirm in minutes. If you need the appointment same-day or within a few hours, calling the center directly or arriving in person works better, since online slots sometimes show availability that's already booked.

LabCorp operates thousands of patient service centers across the United States. Your doctor's office may have already ordered your test, which means LabCorp has your information on file. If not, you'll need to bring your doctor's written order (called a requisition) to your appointment, or have your doctor send it to LabCorp before you arrive.

Key Takeaways

• Book online at labcorp.com, by calling your local LabCorp center, or walk in without an appointment — online is usually fastest for future dates.
• You need a doctor's written order (requisition) for your test, either brought with you or sent to LabCorp in advance.
• Bring a photo ID and insurance card to your appointment, even if your doctor already ordered the test.
• Most LabCorp centers are open early morning through evening on weekdays, with limited weekend hours at some locations.
• If your doctor hasn't ordered a test yet, you cannot schedule at LabCorp — the order must come from a healthcare provider.

Scheduling online through LabCorp's website

Go to labcorp.com and look for the "Schedule a Test" or "Find a Location" button on the homepage. Enter your zip code or city to see nearby patient service centers. The website will show you available appointment times for the next several days, usually in one-hour windows. Select your preferred date and time, then enter your basic information — name, date of birth, phone number, and email address.

Before you complete the booking, the website will ask whether your doctor has already ordered your test. If yes, enter your doctor's name or the name of the facility where your test was ordered. If no, you'll see a message that you need a doctor's order before your appointment. Once you confirm, LabCorp will send you a confirmation email with your appointment details, location address, and parking information.

Calling a LabCorp center to book by phone

Find your nearest LabCorp patient service center by searching "LabCorp near me" or visiting labcorp.com and using their location finder. Each center has a direct phone number. When you call, tell the staff member what test your doctor ordered and what dates and times work for you. They can often book you for the same day or next day, especially for common tests like blood work.

The staff will confirm your name, date of birth, insurance information, and whether you have your doctor's order. If your doctor hasn't sent the order to LabCorp yet, ask the center for your doctor's fax number so you can request it be sent before your appointment. This prevents delays on the day you arrive.

Walking in without an appointment

Most LabCorp patient service centers accept walk-ins during their regular hours. You don't need to call ahead. Bring your photo ID, insurance card, and your doctor's written order if you have it. Wait times for walk-ins vary — early morning (before 10 a.m.) is usually shorter than midday or late afternoon.

If you arrive without your doctor's order, the staff can sometimes contact your doctor's office to retrieve it, but this adds time to your visit. If your doctor hasn't ordered the test yet, you won't be able to proceed — LabCorp cannot draw blood or collect samples without a healthcare provider's order.

What to bring to your appointment

Bring a current photo ID (driver's license, passport, or state ID card) and your insurance card. If you have your doctor's written order, bring that too — it shows the specific tests ordered and any special instructions. If your doctor sent the order directly to LabCorp, the staff will have it on file and you don't need a paper copy.

For certain tests, you may need to fast (avoid food and drink) for a set number of hours beforehand. Your doctor should have told you this when ordering the test, but if you're unsure, call the LabCorp center before your appointment to ask. Wear loose, comfortable clothing that allows easy access to your arm if you're having blood drawn.

LabCorp hours and location options

Most LabCorp patient service centers are open Monday through Friday from 7 a.m. to 7 p.m., with Saturday hours at many locations (usually 8 a.m. to 4 p.m.) and limited Sunday availability. Hours vary by location, so check the specific center's schedule on labcorp.com or call ahead. Some centers in hospitals or medical office buildings may have different hours.

LabCorp also offers at-home collection for certain tests — a phlebotomist comes to your home to draw blood. This option is usually available in major metropolitan areas and must be scheduled through their website or by phone. At-home appointments typically cost more than in-center visits.

If your doctor hasn't ordered a test yet

LabCorp cannot schedule you for a test without a doctor's order. If you want lab work done but haven't seen a doctor, you'll need to contact your primary care provider, an urgent care clinic, or a telehealth service first. They will evaluate whether testing is needed and send the order to LabCorp.

Some employers and insurance companies offer wellness programs that include free or discounted lab screening, but these still require a provider's order. If cost is a concern, ask your doctor whether the test is necessary or whether it can wait until your next scheduled visit.

Frequently Asked Questions

Can I schedule a LabCorp appointment without a doctor's order?

No. LabCorp requires a healthcare provider's written order before you can have any lab test performed. If you don't have an order yet, contact your doctor, an urgent care clinic, or a telehealth provider to request one first.

How long does a typical LabCorp appointment take?

Most appointments last 10 to 20 minutes from check-in to leaving. Walk-ins may wait longer depending on how busy the center is. Early morning visits usually have shorter wait times than afternoon appointments.

What if I need results before my appointment?

LabCorp typically posts results online within 24 to 48 hours of your test. You can view them through their patient portal if you create an account on labcorp.com. Your doctor can also access results directly and may contact you if anything needs follow-up.

Can I reschedule or cancel my LabCorp appointment?

Yes. If you booked online, log into your account on labcorp.com to reschedule or cancel. If you booked by phone, call the center directly. Cancellations are free, and you can rebook for a different date and time.

Do I need insurance to have a test done at LabCorp?

No, but bring your insurance card if you have one. LabCorp will bill your insurance if you're covered. If you're uninsured, ask about their cash-pay rates, which vary by test and location.