Your question: What do drug test cutoff levels mean?

What does “Cut-off level” mean? Essentially, it means separating the positives from the negatives. In drug and alcohol testing, a cut-off level is a level at which the concentration of a substance in your breath, urine, or saliva, indicates a safety risk.

What is cutoff level for drug test?

(2) Each confirmatory drug test must provide a quantitative result.

§ 26.163 Cutoff levels for drugs and drug metabolites.

Drug or metabolites Cutoff level [nanograms (ng)/mL]
Cocaine metabolites 300
Opiate metabolites 2000
Phencyclidine (PCP) 25
Amphetamines 1000

What does a cut-off level refer to?

The first cut-off is called the Level of Detection.

The next cut-off is at the upper level of this range. If the concentration of a drug or its metabolite is between the level of detection and this next cut-off, the lab report will indicate a therapeutic dose.

How long does it take to get below 50 ng/mL urine test?

When tested at the 50 ng/ml cutoff threshold, infrequent users typically test negative for the presence of marijuana metabolites within 3-4 days, while heavy users typically test negative by ten days after ceasing use, the study found.

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How long does it take for a drug test to come back from the lab?

Drug test results typically take 24 to 48 hours, depending on the type of test being performed (e.g., urine, hair or DOT).

How long will it take to pass a 15 ng/mL drug test?

Using the 15 ng/mL GC/MS cutoff, the detec- tion time for the last positive urine sample (for six subjects following high dose smoking) was 122 hours—just over five days.

Do employers call you back after drug test?

Following a negative result: If your test results are negative for drugs, it is common for a medical review officer (MRO) to contact your employer with the results. Your employer will then typically contact you regarding next steps of the hiring process.

How far back does a urine test go?

Most drugs of abuse stay in the body for at least a few days after the last use and are traceable with urine tests. Opioids like heroin and oxycodone are detectable for between 1 and 3 days after last use. Stimulants including cocaine, meth, and ADHD medications are detectable for about 2 or 3 days.

How accurate are lab urine drug tests?

99% accurate is not defendable. It leaves reason for doubt that the test could be inaccurate. This makes dismissal of an employee or the non-hiring of an employee difficult to defend if an appeal is made. The FDA approves lab based urine drug testing for employees because it is defendable.