The other category of testing is quantitative testing, or confirmation (also known as “definitive testing”). Definitive testing is commonly performed to “confirm” positive screening results, negative screening results for expected drugs or to test for drugs that do not offer screening options.
What is a confirmatory drug test?
Confirmatory tests are more specific and can determine the precise identity of nearly any substance using sophisticated testing such as Gas Chromatography/Mass Spectrometry or Liquid Chromatography/Tandem Mass Spectrometry equipment in a laboratory.
How long does a confirmation drug test take?
Negative results, therefore, are generally available within 2-3 days, while positive test results may take up to a week to confirm. Though it may take slightly longer than urine tests, hair tests have the advantage of being able to detect drug use from many months before the specimen was collected.
Why is confirmatory testing required for screening a positive drug test?
Confirmatory Test refers to the analytical procedure to identify and quantify the presence of a specific drug or metabolite, which is independent of the initial test and which uses a different technique and chemical principle from that of the screening test in order to ensure reliability and accuracy.
What is confirmatory drug cutoff levels?
In the case of urine analysis, drug testing cutoff levels are measured in nanograms per milliliter (ng/ml). For example, an initial screening for marijuana must show at least 50 ng/ml, and then confirmatory tests must prove at least 15 ng/ml.
How accurate is drug confirm?
If the test results are negative, can you be sure that the person you tested did not abuse drugs? No. No drug test of this type is 100% accurate. There are several factors that can make the test results negative even though the person is abusing drugs.
What is an example of a confirmatory test?
For example, the Kastle–Meyer test will show either that a sample is not blood or that the sample is probably blood but may be a less common substance. Further chemical tests are needed to prove that the substance is blood. Confirmatory tests are the tests required to confirm the analysis.
Can you still get hired if you fail a drug test?
Pre-employment screening can be more straightforward than screening for existing staff, Phillips said. If an employer makes a job offer contingent on passing a drug test, the offer can generally be rescinded if the applicant tests positive. There may be more steps employers must follow for current employees.
Will MRO call if you fail drug test?
If the initial result is negative, the MRO will confirm the lab’s findings and send final results to the employer. 3. 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.
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 happens if you test positive on a DOT drug test?
DOT and USCG regulation may prohibit you from performing your safety-sensitive functions after a positive test result or refusal to submit to testing. You should be aware that a positive, adulterated or substituted DOT drug or alcohol test may trigger consequences based on company policy or employment agreement.
What if my drug test is positive?
If your results are positive, it means one or more drugs were found in your body above an established level. However, false positives can happen. So if your first test shows that you have drugs in your system, you will have further testing to figure out whether or not you are actually taking a certain drug or drugs.
How do you challenge a positive 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. Ask if the pharmacist can provide written documentation to this effect and bring a copy to the test site.
What does inconsistent mean on a drug test?
An inconsistent result occurs when:
Different drugs are found: none of the prescribed drugs are detected, but at least one other drug, non-prescribed or illicit, is detected. • No drugs are found: none of the drugs prescribed for the patient are detected and neither are any non-prescribed or illicit drugs.
What does ng/mL mean on a drug test?
Nanograms per milliliter, abbreviated ng/mL, is the unit of measure most commonly used to express drug testing cut-off levels and quantitative test results in urine and oral fluid.
What happens when you fail a drug test with DISA?
If one of your employees fails a drug screen and they are in a safety-sensitive position, they must be removed from duty immediately. If the employee is not in a safety-sensitive position, then disciplinary actions can vary based on company policy.