You can get a drug test at national laboratory chains, urgent care clinics, pharmacies, your doctor’s office, or at home with an over-the-counter kit. The most common option for employment or legal purposes is a walk-in collection site run by a major lab network. Quest Diagnostics alone operates over 2,000 locations across the United States, and LabCorp maintains a similarly large footprint.
National Lab Networks
Quest Diagnostics and LabCorp are the two largest providers of drug testing in the U.S. Both accept walk-in and scheduled appointments at thousands of collection sites nationwide. You can search their websites by zip code to find the closest location, and many sites are open on weekdays without an appointment. These labs handle everything from standard pre-employment screens to federally regulated testing for transportation workers.
If your employer or court ordered the test, you’ll typically receive paperwork (called a chain-of-custody form) directing you to a specific lab or network. In that case, you need to go where the form specifies, not just any testing site. If you’re testing on your own, you can order a test online through either network’s consumer portal and then visit a nearby collection site to provide your sample.
Urgent Care and Retail Clinics
Many urgent care centers and retail health clinics inside pharmacies like CVS MinuteClinic or Walgreens offer drug testing services. These are often convenient for people who need a quick turnaround or live far from a major lab location. Some occupational health clinics specialize in workplace testing and can handle both standard screens and more specialized panels. Call ahead to confirm the specific clinic offers drug testing, since not all locations do.
At-Home Test Kits
Over-the-counter drug test kits are available at most pharmacies and online retailers. They’re inexpensive and give results in minutes. The FDA notes that these home tests are fairly sensitive to the presence of drugs in urine, meaning they’ll usually detect substances if they’re there. But they come with a significant limitation: a positive result from a home kit is only preliminary.
Certain foods, supplements, beverages, and medications can trigger false positives on home tests. The FDA specifically warns that some over-the-counter medications produce the same test results as illegally abused amphetamines. If your home test shows a positive result, you should send the sample to a laboratory for confirmation before drawing any conclusions. Home kits are useful for personal screening, but they’re not accepted for employment, legal, or federal purposes.
Types of Tests Available
Urine testing is by far the most common method, but many lab locations also offer alternatives. Quest Diagnostics, for example, provides hair drug testing, oral fluid (saliva) screening, and blood-based testing. Each method has a different detection window:
- Urine detects most substances used within the past few days to a week, depending on the drug.
- Hair can detect drug use going back roughly 90 days, making it popular for jobs requiring a longer look-back period.
- Oral fluid picks up very recent use, typically within the past 24 to 48 hours.
Not every collection site offers every method. Hair and oral fluid testing tend to be available at larger lab locations rather than small retail clinics. If you need a specific type, check availability before you go.
DOT and Federally Regulated Testing
If you work in a safety-sensitive job regulated by the Department of Transportation (pilots, truck drivers, transit operators, pipeline workers), your drug test must follow stricter rules. Specimens can only be processed by laboratories certified by the Department of Health and Human Services under the National Laboratory Certification Program. These certified labs also perform validity testing to check whether a sample has been tampered with or substituted.
DOT testing follows specific protocols laid out in federal regulations (49 CFR Part 40), and not every lab qualifies. Your employer or a third-party administrator will direct you to an approved collection site. You can also find the current list of HHS-certified laboratories through SAMHSA’s website.
What to Bring
At minimum, bring a valid government-issued photo ID such as a driver’s license or passport. If your employer or a court ordered the test, bring the chain-of-custody form or authorization paperwork you were given. Without this documentation, the collection site may not be able to process your test or link results to the correct order. Some regulated industries require additional documents. NYC’s Taxi and Limousine Commission, for instance, requires drivers to bring both their TLC license and their DMV license.
Cost Without Insurance
If you’re paying out of pocket, the price depends on how many substances are being screened. A basic 5-panel test (which covers the five most commonly tested drug categories) typically runs $50 to $100. A 10-panel screen, which adds several additional substances, generally costs between $100 and $200. Hair and oral fluid tests tend to cost more than urine screens. When an employer or court orders the test, they usually cover the cost or reimburse you.
Who Sees Your Results
If you order the test yourself for personal reasons, results go only to you. For employer-ordered tests, results are reported to a Medical Review Officer (MRO) who contacts you if there’s a positive finding before reporting to your employer. Federal regulations prohibit employers and testing service providers from releasing individual test results to third parties without your specific written consent. The main exception involves certain state laws that require CDL licensing authorities to be notified of positive results for commercial motor vehicle drivers.
How Long Results Take
Negative results from a standard urine screen are typically available within one to three business days. If the initial screen flags a potential positive, the sample undergoes a more precise confirmation test at the laboratory, which can add another day or two. Hair tests and specialty panels sometimes take slightly longer. At-home kits give results in about 5 to 10 minutes, but again, any positive from a home kit needs laboratory confirmation to be considered reliable.