For a lab-based test, the collected specimen (urine, hair, oral fluid) is sent to a laboratory for more rigorous testing. As such, it takes longer to get the results (2-3 days, on average). A lab-based test can screen for any drug.
How long does it take for a drug test to come back from the lab?
Testing is performed as soon as the specimen arrives at our laboratory. Negative results are often released within 24 hours. Non-negative screens undergo confirmatory testing and are typically released within an additional 24 to 72 hours. Find the nearest drug testing collection site.
What happens if drug test comes back positive?
If the test results in a positive reading, meaning there is drug residue in the body, the results are forwarded to a medical review officer, who reviews the results and looks for any possible valid medical explanation for the results.
What do lab urine drug tests test for?
Urine drug testing may screen for multiple substances, including amphetamines, methamphetamines, benzodiazepines, barbiturates, marijuana, cocaine, opiates, PCP, methadone, nicotine, and alcohol.
Does the lab call you if you pass a drug test?
If the initial result is positive, the MRO has 72 hours to call the donor to see if they are on any medications or have any other legitimate medical explanation for the positive result. If the donor does not answer, the MRO may leave up to three voicemails.
Do you hear back from a drug test?
It usually only takes a few days to receive results from a workplace drug test. An employer may even request a rapid test, which can provide results the same day. Employers receive negative test results within 24 hours. Non-negative results take more time because of the additional testing required.
How do you prepare a urine drug test?
Preparing for urinalysis
Before your test, make sure to drink plenty of water so you can give an adequate urine sample. However, drinking excessive amounts of water may cause inaccurate results. One or two extra glasses of fluid, which can include juice or milk if your diet allows, is all you need the day of the test.
Can I fight a positive drug test?
Some companies will allow strong candidates to retake a drug test. The best way to contest false-positive results is to reach out to your pharmacist and ask if prescription drugs and OTC medications you take on a regular basis can cause a positive drug test result.
What can cause a false positive on a urine drug screen?
What Can Cause a False Positive Drug Test
- 1 / 11. Secondhand Marijuana Smoke. If you hang out often with someone who puffs on pot, your urine could have traces of THC. …
- 2 / 11. Weight Loss Pills. …
- 3 / 11. Poppy Seeds. …
- 4 / 11. Mouthwash. …
- 5 / 11. Antidepressants. …
- 6 / 11. Antibiotics. …
- 7 / 11. CBD Oil. …
- 8 / 11. Antihistamines.
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What do you do if you have a false positive drug test?
If you have any questions about false positive substance results from a test, speak with a medical professional. Let the medical professional administering the screening know if you are taking any of these medications. If you experience what you believe to be a false positive, request a second drug screening test.
Are lab drug tests more sensitive?
If a company has safety sensitive jobs or needs rigor and the ability to defend itself in a court-type setting, then lab testing is the way to go. But if speed is more important than so-called “accuracy,” instant testing probably makes more sense.
What does the 5 panel drug test test for?
However, our most commonly requested urine drug test is a 5-panel that screens for the presence of the amphetamines, cocaine, marijuana, opiates, and PCP.
What drugs do employers test for?
A typical urine drug test for employment purposes screens for drugs including amphetamines, cocaine, marijuana, methamphetamines, opiates, nicotine, and alcohol. Urine tests may be required as part of pre-employment screening or may be conducted randomly by employers, especially for employees in certain occupations.
Will menstrual blood affect urine drug test?
Menstrual blood can contaminate a urine sample. Vitamin C supplements, food coloring in candy, and the natural color in beets can affect the color of your urine.
Will MRO call if you fail drug test?
If the initial drug test is positive, the MRO will contact the donor to see if they are on any medications or have any other legitimate medical explanation for the positive result (usually within 24 hours). If the donor does not answer, the MRO may leave up to three voicemails. The donor is given 72 hours to respond.
What color should Urine be for a drug test?
Within the normal range of urine color, you may see: Pale yellow: This is a healthy color. Your body is functioning normally and hydration levels are optimal. However, if pale yellow becomes clear, you may be overhydrated.