Concentra is a national chain of urgent care and occupational health clinics that perform drug tests for employers

Concentra operates over 600 locations across the United States and handles drug screening as part of its occupational health services. When an employer orders a drug test through Concentra, the company collects the sample at one of its clinics, sends it to a lab for analysis, and reports results back to the employer. You do not pay Concentra directly — your employer or the organization requesting the test pays the clinic.

Concentra performs drug tests for pre-employment screening, random workplace testing, post-accident testing, and return-to-duty testing after a positive result or failed substance abuse program. The company also conducts DOT (Department of Transportation) drug tests for commercial drivers and other safety-sensitive positions. Concentra is one of several national chains that employers use; others include Quest Diagnostics and LabCorp, which also operate urgent care or lab networks.

Key Takeaways

  • Concentra collects drug test samples at its clinics but does not own the labs that analyze them — results come from partner laboratories.
  • You typically schedule an appointment through your employer's testing program or by calling the Concentra location directly with a test order number.
  • Most drug tests at Concentra are urine tests, though some locations offer hair, saliva, or breath alcohol tests depending on what the employer ordered.
  • Results usually return within 24 to 48 hours for standard tests, though DOT tests and tests requiring medical review can take longer.
  • If your test is positive or shows an issue, Concentra may contact you to confirm medications or medical conditions before the result goes to your employer.

How to schedule a test at Concentra

Your employer will give you a test order number or direct you to schedule through their testing program portal. You then call the Concentra location nearest you or book online through Concentra's website. Have your test order number, employer name, and photo ID ready when you arrive.

Walk-in appointments are sometimes available, but scheduling in advance is faster. Bring your ID and any medications you are currently taking, since the collector may ask about them. The appointment itself usually takes 10 to 15 minutes for a urine test, though the wait time depends on how busy the clinic is that day.

What happens during the test

A Concentra staff member will verify your identity, explain the testing process, and ask you to provide a urine sample in a private bathroom or collection room. For urine tests, the collector watches to may support the sample is genuine. The sample is then sealed, labeled with your information, and prepared for shipment to the lab.

If you are taking prescription medications, tell the collector before the test. Some medications can show up on a drug screen, and Concentra's medical review officer (MRO) will contact you afterward to confirm what you are taking before any positive result reaches your employer. This is a standard part of the process and does not mean you have failed.

Types of drug tests Concentra offers

The most common test is a urine drug screen, which detects marijuana, cocaine, amphetamines, opioids, and PCP. A standard five-panel test looks for these five drugs. Some employers order a ten-panel test that also screens for benzodiazepines, barbiturates, methadone, propoxyphene, and quaaludes.

Concentra also performs hair tests, which can detect drug use over a longer period (typically 90 days) and are harder to cheat, though they cost more. Saliva tests are faster and less invasive but detect only recent use. Breath alcohol tests measure current impairment. Your employer decides which type of test to order; you do not choose.

How long results take and what happens next

Standard urine tests typically return results within 24 to 48 hours. DOT tests and tests that require medical review officer review can take 3 to 5 business days. Concentra will notify your employer of the result, and your employer will then notify you according to their policy.

If the test is negative, you will usually hear nothing further. If the result is positive or shows an issue, the medical review officer will call you to discuss medications, medical conditions, or other explanations before the result is reported to your employer. You have the right to explain any positive result during this call. If you disagree with the result, you may request a retest at your own expense in most cases.

Concentra versus other drug testing providers

All three major chains — Concentra, Quest Diagnostics, and LabCorp — perform similar tests and work with employers in the same way. Concentra operates over 600 locations, Quest Diagnostics has more than 2,000, and LabCorp has approximately 1,800. All three offer urine, hair, saliva, and breath alcohol tests, with standard turnaround times of 24 to 48 hours.

The main difference is location availability — Quest and LabCorp have more locations in some areas, while Concentra may be closer in others. Your employer chooses which provider to use, not you. If you have a choice between locations, pick whichever is most convenient to reach on the day of your test.

What to know before your Concentra test

Bring a valid photo ID and your test order number. Wear comfortable clothing that allows straightforward access to your arm if a blood draw is needed (rare for standard drug tests, but possible for DOT tests). Arrive a few minutes early to complete any paperwork.

Do not try to cheat or dilute a urine sample. Concentra tests for dilution, and a diluted or invalid sample will be reported as such to your employer, which may be treated the same as a positive result. If you have questions about what you can or cannot do before the test, ask the collector when you arrive.

Frequently Asked Questions

Can I reschedule my Concentra drug test?

Yes. Contact the Concentra location where you are scheduled or call the number on your test order. Most locations allow rescheduling up to 24 hours before your appointment. Your employer may have rules about how many times you can reschedule, so check with them if you need to move your test more than once.

What if I take prescription medications — will they show up on the test?

Prescription medications can show up on a drug screen. Tell the collector before the test, and if a medication triggers a positive result, the medical review officer will call you to confirm what you are taking. This conversation happens before your employer sees the result, and a legitimate prescription will not be reported as a positive.

How do I get my test results from Concentra?

Concentra reports results to your employer, not directly to you. Your employer will notify you of the outcome according to their policy. If you need a copy of your test results for your own records, contact the Concentra location where you tested and ask how to request documentation.

What if my test result is positive?

A medical review officer will contact you to discuss the result and ask about medications or medical conditions that might explain it. You have the right to explain the positive result during this call. If you disagree with the result, you may request a retest at your own expense in most cases, though your employer's policy determines whether they will pay for it.

Can I bring someone with me to my Concentra test?

You can bring someone to wait in the lobby, but they cannot go into the collection room with you. The collector needs to observe the sample collection to may support its validity, so only you and the collector will be present during that part of the process.