How to Schedule and Prepare for a LabCorp Drug Test

What happens when you book a LabCorp drug test appointment

When you schedule a LabCorp drug test, you're booking a time slot at one of LabCorp's patient service centers to provide a urine, hair, or saliva sample that gets sent to their lab for analysis. The appointment itself is usually quick — typically 5 to 15 minutes in the collection room — but you'll want to arrive 10 to 15 minutes early to check in and complete any required paperwork. LabCorp has over 1,800 locations nationwide, so you can usually find one near you and book online or by phone.

The test type and reason for testing determine what you need to bring and how you prepare. Some tests require fasting or avoiding certain substances beforehand; others have no special preparation. Your employer, healthcare provider, court, or insurance company may have ordered the test, and they'll receive the results directly — not you — unless you specifically request a copy.

Key Takeaways

• You can schedule a LabCorp drug test online through their website, by calling 1-800-LAB-CORP, or by walking into a patient service center without an appointment, though wait times vary.
• Bring a valid photo ID and any paperwork your employer or ordering provider gave you, such as a requisition form or test authorization.
• Urine tests are the most common and require no preparation; hair and saliva tests have different collection methods and may require you to avoid eating or drinking for a short period beforehand.
• Results typically arrive within 24 to 72 hours, though some tests take longer, and your ordering party receives them first.
• If you test positive and believe it's an error, you can request a confirmation test (usually a GC-MS test) at additional cost.

How to schedule your appointment online or by phone

The easiest way to book is through LabCorp's website at labcorp.com. Go to "Schedule a Test," enter your zip code, and select the nearest patient service center. You'll see available appointment times, usually in 15-minute slots throughout the day and into early evening. Choose your time, confirm your contact information, and you'll receive a confirmation email with your appointment details and a check-in code.

If you prefer to call, dial 1-800-LAB-CORP (1-800-522-2767). A representative will ask for your zip code, preferred dates and times, and any relevant information about the test (such as whether it's for employment or a court order). They'll confirm your appointment over the phone and send a confirmation to your email or phone.

You can also walk into any LabCorp patient service center without an appointment. Same-day service is usually available, but wait times depend on how busy the location is — mornings tend to be less crowded than afternoons. If you walk in, bring your ID and any paperwork you have; staff will check you in at the front desk.

What to bring and how to prepare

Always bring a valid photo ID — a driver's license, passport, or state ID card. If your employer or ordering provider gave you a requisition form, test authorization, or any other paperwork, bring that too. LabCorp staff will need it to match you to the correct test and ensure results go to the right place. If you don't have the paperwork, LabCorp can sometimes look up the order using your name and date of birth, but having it on hand speeds things up.

For a urine drug test, the most common type, you don't need to fast or avoid food or drink beforehand. However, avoid excessive water intake right before your appointment — you need to provide a sample of adequate volume, and over-dilution can make the test invalid. Wear comfortable clothing that allows easy access to your arm if a blood draw is also part of your screening.

For a hair drug test, wash your hair normally the night before but don't use any special treatments, dyes, or clarifying shampoos on the day of your test. Hair tests look back 90 days, so they detect longer-term use. For a saliva test, avoid eating, drinking, smoking, or chewing gum for 30 minutes before your appointment to ensure an accurate sample.

What to expect during the collection process

When you check in, a staff member will verify your identity, confirm the test type, and ask you to sign consent forms. For a urine test, you'll be directed to a private bathroom with a collection cup. You'll provide a sample, seal it, and hand it to the collector. The collector may observe the collection depending on the test's purpose — this is standard for employment and legal tests to prevent tampering.

For a hair test, the collector will cut a small sample (about the thickness of a pencil) from the crown of your head, close to the scalp. It doesn't hurt and leaves no visible bald spot. For a saliva test, you'll spit into a collection tube or allow the collector to swab the inside of your cheek. The entire process takes just a few minutes.

After collection, the sample is sealed, labeled with your information and a unique identifier, and prepared for transport to LabCorp's lab. You'll receive a receipt confirming the test was collected. That's it — you're done, and you can leave.

When results arrive and what they mean

Most LabCorp drug test results are available within 24 to 72 hours. Some tests, particularly those requiring confirmation testing, may take longer — up to a week in some cases. Results go to your employer, healthcare provider, court, or whoever ordered the test. You typically won't see them unless you ask for a copy or your ordering party shares them with you.

A negative result means no drugs were detected above the test's threshold levels. A positive result means a drug or its metabolite was found. If you test positive and believe it's wrong — perhaps because you took a prescription medication or were exposed to secondhand smoke — you can request a confirmation test. The most common confirmation method is a GC-MS (gas chromatography-mass spectrometry) test, which is more specific and costs extra, usually $100 to $300 depending on the drug panel.

Some medications and foods can produce false positives on initial screening tests. For example, certain pain relievers can show as opioids, and poppy seeds can show as opioids. A confirmation test will distinguish between a true positive and a false positive caused by these substances.

Cost and insurance coverage

LabCorp drug test costs vary depending on the test type and the number of drugs screened. A basic 5-panel urine test (screening for marijuana, cocaine, amphetamines, opioids, and PCP) typically costs $30 to $50 if you pay out of pocket. More comprehensive panels cost more. Hair and saliva tests are generally more expensive than urine tests.

If your employer ordered the test, they usually pay. If a healthcare provider ordered it, your insurance may cover it, particularly if it's medically necessary. If you're paying yourself, ask about the cost when you schedule — LabCorp staff can give you a quote based on the specific test panel. Some employers and insurance plans have negotiated rates with LabCorp, so the price you see online may not be what you actually pay.

What to do if you need to reschedule or cancel

If you need to change your appointment time, log into your LabCorp account on their website and select "Manage Appointment," or call 1-800-LAB-CORP. Most locations allow you to reschedule up to 24 hours before your appointment time. If you cancel within 24 hours, some locations may charge a cancellation fee, though this varies by location and test type.

If you miss your appointment without canceling, contact LabCorp as soon as possible. Depending on who ordered the test, a missed appointment may trigger a follow-up request or be reported to your employer or the ordering party. It's better to reschedule than to skip it entirely.

Frequently Asked Questions

Can I eat or drink before my drug test?

For a urine test, you can eat and drink normally, but avoid excessive water right before your appointment — you need an adequate sample volume. For a saliva test, don't eat, drink, smoke, or chew gum for 30 minutes beforehand. For a hair test, no special preparation is needed beyond normal hygiene.

What if I'm taking prescription medications that might show up on the test?

Tell the collector before your sample is taken. Write down the medication names and dosages on the consent form if there's a space for it. If you test positive, you can request a confirmation test and provide proof of your prescription to the testing company or your employer. Confirmation tests can distinguish between legitimate prescription use and illicit drug use.

How long do drug test results stay on record?

LabCorp typically keeps test records for a set period — usually several years — but the specific retention depends on the test type and your state's regulations. Your employer or the ordering party may keep results longer. If you need a copy of your results for your own records, request one from LabCorp or your ordering party.

Can I bring someone with me to my appointment?

You can bring someone to wait with you in the lobby, but they cannot go into the collection room with you. The collection process requires privacy, and observers are only present if required by the test's purpose (such as for legal or employment tests) and conducted by trained LabCorp staff.

What if my sample is rejected or invalid?

If your sample doesn't meet collection standards — for example, if a urine sample is too dilute or a hair sample is too short — LabCorp will contact you or your ordering party to request a recollection. You'll need to come back for another appointment at no additional charge. This is why following preparation instructions matters.