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 test, location, and time slot in about five minutes. If you call, have your insurance card and a list of any tests your doctor ordered ready. Walk-ins are accepted at most locations but may mean a longer wait, especially during morning hours.

LabCorp operates thousands of patient service centers across the United States. Your doctor may have already sent your test order to a specific location, or you can choose any center near you. The appointment itself is typically brief — usually 10 to 15 minutes from check-in to leaving — though the actual wait time depends on how busy the location is that day.

Key Takeaways

• Schedule online at labcorp.com or by calling 1-800-LAB-CORP (1-800-522-2676) to pick your preferred date, time, and location.
• Bring your insurance card, photo ID, and any lab requisition your doctor provided, even if you scheduled online.
• Fasting requirements vary by test — some blood work requires you to avoid food and drink for 8 to 12 hours beforehand, so check your test details before your appointment.
• Walk-ins are welcome at most LabCorp locations, but scheduling ahead usually means less time waiting.
• Results typically post to your patient portal within one to three business days, depending on the test type.

Scheduling online through LabCorp's website

Go to labcorp.com and select "Schedule a Test" or "Find a Location." You will be asked to enter your zip code or city to see nearby patient service centers. The website shows you real-time availability — you can see which time slots are open today, tomorrow, and further out. Select the date and time that works for you, then enter your basic information: name, date of birth, phone number, and email.

If your doctor has already ordered tests for you, you can enter your test name or your doctor's name during booking, and LabCorp will try to pull up the order. If the order is not found, you can still schedule — just bring the paper requisition your doctor gave you, or ask your doctor's office to send it to LabCorp before your appointment. You will receive a confirmation email with your appointment details and instructions specific to your test.

Calling LabCorp to book by phone

Call 1-800-LAB-CORP (1-800-522-2676) to speak with a scheduling representative. They can answer questions about which tests you need, whether fasting is required, and what to bring. Have your insurance information ready, along with your doctor's name if you have an existing order. The representative will confirm your preferred location and time slot and send you a confirmation via email or text.

Phone scheduling is useful if you are unsure which test your doctor ordered, if you have questions about preparation, or if you prefer to talk through your options. Wait times vary depending on call volume, but most calls are handled within a few minutes during business hours.

What to bring to your appointment

Bring your photo ID and insurance card — these are required at check-in. If your doctor gave you a paper lab requisition or order form, bring that too, even if you scheduled online. Some doctors' offices send orders electronically to LabCorp, but having the paper copy ensures there is no mix-up about which tests you are there for.

Wear loose, comfortable clothing with sleeves that roll up easily if you are having blood drawn. If your test requires fasting, do not eat or drink anything except water for the time period specified — usually 8 to 12 hours before your appointment. Check your confirmation email or call ahead if you are unsure whether your specific test requires fasting.

Fasting and other test preparation

Different tests have different preparation rules. Blood tests that measure cholesterol, glucose, or triglycerides usually require fasting. Urinalysis and most other routine tests do not. Your confirmation email will list any preparation needed for your specific test. If you do not see instructions, call the location or check labcorp.com — it is better to ask than to show up unprepared and have to reschedule.

If you accidentally eat or drink before a fasting test, tell the staff when you arrive. Some tests can still be done, while others may need to be rescheduled. It is not worth guessing — let them decide. If you take medications, ask your doctor whether you should take them before a fasting test, since some medications should be taken with food.

What happens during your appointment

Check in at the front desk with your ID and insurance card. A phlebotomist or lab technician will call you back, verify your name and date of birth, and explain what test is being done. For blood tests, they will have you sit in a chair, tie a band around your upper arm, and draw blood from a vein — usually in the crook of your elbow. The whole process takes a few minutes. For urine tests, you will be directed to a restroom to collect a sample in a cup.

After the sample is collected, you are done. You can leave immediately. The sample is labeled with your information and sent to a LabCorp lab for analysis. You do not need to wait for results in the office.

When and how you get your results

Most results are available within one to three business days. LabCorp sends results to your patient portal, which you can access through labcorp.com or the LabCorp mobile app. You will receive an email or text notification when results are ready. Some results post faster — routine tests like urinalysis may be ready the next day, while more complex tests can take longer.

Your doctor's office also receives a copy of your results. If you have questions about what your results mean, contact your doctor — they ordered the test and can explain the findings in the context of your health. LabCorp's patient portal shows reference ranges and some basic information, but your doctor is the right person to interpret what the numbers mean for you.

Frequently Asked Questions

Can I schedule a LabCorp appointment same-day?

Many locations have same-day appointments available, especially if you call or check online in the morning. Walk-ins are also accepted without an appointment, though you may wait longer. Check labcorp.com or call your nearest location to see what is available today.

What if I do not have insurance?

LabCorp accepts uninsured patients and offers cash pricing. Costs vary by test and location. You can ask about pricing when you schedule, or call ahead to get a quote. Some employers and community health programs also offer discounted lab testing.

Do I need my doctor to order the test first?

Most tests require a doctor's order. However, LabCorp offers some tests directly to consumers without a doctor's order, such as wellness screenings or drug testing. When you schedule, the website will tell you whether your test requires an order or can be done without one.

What if I miss my appointment?

Call the location as soon as you realize you cannot make it, so they can offer the slot to another patient. If you need to reschedule, you can do so online or by phone. There is no penalty for canceling or rescheduling, but giving notice helps the clinic manage their schedule.

Can someone go with me to my appointment?

Yes. A family member or friend can accompany you to the waiting room. They may or may not be allowed in the back during the actual test, depending on the location's policy — ask when you arrive.