How to Schedule a Labcorp Appointment for Blood Work and Lab Tests

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 method is usually fastest — you pick your location, choose an available time slot, and confirm in minutes. If you prefer to call, Labcorp's scheduling line is available during business hours and can often fit you in the same day or next day depending on your location.

You'll need your insurance card and a valid photo ID when you arrive. If your doctor ordered specific tests, bring the lab requisition form — Labcorp can also look up orders electronically if your doctor sent them directly to the lab. Walk-ins are welcome at most locations, though you may wait longer during peak hours (typically mid-morning and early afternoon).

Key Takeaways

• Schedule online at labcorp.com or by calling 1-800-LAB-CORP (1-800-522-2767) to book a specific time slot.
• Bring your insurance card, photo ID, and any lab requisition your doctor provided or had sent electronically.
• Most Labcorp locations accept walk-ins, but appointment slots typically have shorter wait times.
• Fasting requirements depend on which tests you're having — your doctor's order or the Labcorp website will specify what to do beforehand.
• Results are usually available within 24 to 48 hours and can be viewed through your patient portal or by calling the lab.

Scheduling online through Labcorp's website

Go to labcorp.com and select "Schedule a Lab Test" or "Find a Location." Enter your zip code or city to see all patient service centers near you, along with their hours and available appointment times. The calendar shows open slots for the next several days — you can usually book same-day or next-day appointments at most locations.

Select your appointment time, then enter your information: name, date of birth, phone number, and email address. You'll be asked whether you have an existing lab order from your doctor. If you do, you can upload the form or provide your doctor's name and Labcorp will retrieve it. If you don't have an order yet, you can still book the appointment and bring the form when you arrive, or ask Labcorp staff to contact your doctor's office.

After you confirm, you'll receive an email with your appointment details and a list of what to bring. Save this confirmation — you may need the appointment number if you need to reschedule or if there are questions when you arrive.

Calling Labcorp to book by phone

Call 1-800-LAB-CORP (1-800-522-2767) Monday through Friday during business hours. A scheduler will ask which location you prefer, what tests you need (or whether your doctor ordered them), and what times work for you. They can often book you the same day, especially if you call in the morning.

Have your insurance information and doctor's name ready when you call. If your doctor already sent an order to Labcorp, the scheduler can confirm it's in the system. If not, they'll note that you need to bring the form or have your doctor send it before your appointment.

What to bring and how to prepare

Bring your insurance card and a valid photo ID (driver's license, passport, or state ID). If your doctor ordered specific tests, bring the lab requisition form — it shows which tests to run and any special instructions. If you don't have the form, Labcorp can contact your doctor's office to retrieve it, though this may delay your appointment by a few minutes.

Check your lab order or the Labcorp website for fasting instructions. Some blood tests require you to fast (eat and drink nothing except water) for 8 to 12 hours beforehand, usually overnight. Others have no fasting requirement. If you're unsure, call the location where you're scheduled or ask when you arrive — staff can tell you whether your specific tests need fasting.

Wear loose, comfortable clothing with sleeves that roll up easily, since the phlebotomist will need access to your arm. Drink water before your appointment if you're not fasting — hydration makes veins easier to find.

Walk-in appointments and wait times

Most Labcorp patient service centers accept walk-ins without an appointment. You can arrive during business hours, check in at the front desk, and wait for the next available phlebotomist. Walk-in wait times vary by location and time of day — typically 15 to 45 minutes, but can be longer during peak hours (9 a.m. to noon and 1 p.m. to 3 p.m. on weekdays).

If you want to avoid waiting, scheduling an appointment online or by phone is the better choice. Appointment slots usually have minimal wait time, and you know exactly when to arrive.

After your appointment: accessing results

Results are usually ready within 24 to 48 hours, though some tests take longer. You can view results through your patient portal on labcorp.com if you create an account, or by calling the location where you had your tests done. Your doctor's office may also receive the results electronically and contact you if anything needs follow-up.

If you don't see results within the timeframe your doctor mentioned, call Labcorp directly. Delays can happen if the lab needs a repeat sample or if there's a technical issue, and staff can tell you what's happening and when to expect results.

Rescheduling or canceling an appointment

If you need to change your appointment time, log into your account on labcorp.com and select "Manage Appointments," or call 1-800-LAB-CORP. Most locations allow you to reschedule up to 24 hours before your appointment without penalty. If you cancel with less notice, you may need to book a new slot, though this is usually not a problem since Labcorp has frequent availability.

If you miss an appointment without canceling, there's typically no fee, but you'll need to reschedule when you're ready. Your doctor's order remains valid, so you can book a new time whenever it works for you.

Frequently Asked Questions

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

Yes. Labcorp offers wellness tests and screening panels that you can order directly without a doctor's referral. These include cholesterol panels, diabetes screening, and general health checkups. You can add these to your appointment when you schedule online, or ask about them when you call or arrive at the location.

What if my doctor's order isn't in the system yet?

Bring the physical form with you to your appointment. If you don't have it, Labcorp staff can contact your doctor's office to retrieve it — this usually takes a few minutes. You can also ask your doctor's office to fax or electronically send the order directly to the Labcorp location where you're scheduled.

Do I need to fast before all blood tests?

No. Fasting is required only for certain tests, usually those measuring glucose or lipids (cholesterol and triglycerides). Your lab order will specify if fasting is needed. If you're unsure, call the Labcorp location or ask when you check in — staff can tell you whether your specific tests require it.

How long does the actual blood draw take?

The phlebotomist usually takes the sample in 5 to 10 minutes. The entire visit, including check-in and paperwork, typically takes 15 to 30 minutes if you have an appointment, or longer if you walk in during a busy time.

Can I view my results online?

Yes. Create an account on labcorp.com to access your results through the patient portal once they're ready. You can also call the location where you had your tests, or your doctor's office may contact you with results. Results are usually available within 24 to 48 hours.