FREQUENTLY ASKED QUESTIONS ABOUT DRUG TESTING

Why are screening and confirmation cutoff levels different?

Screening and confirmation testing are performed using different methodologies that require different cutoff levels. The cutoff levels of an immunoassay (screen) are typically higher than those of a more sensitive GC-MS or LC-MS/MS confirmation test. [...]

Problem Collections: Refusal to Test

Summarized from 49CFR Part 40) and adapted to non-DOT collections. We model DOT protocols for all collections. The collector may terminate the process at any point if the donor does not cooperate. No one [...]

Problem Collections: Shy Bladder

Summarized from 49CFR Part 40) and adapted to non-DOT collections. We model DOT protocols for all collections.  The collector may terminate the process at any point if the donor does not cooperate. Urine drug tests [...]

Problem collections: Temperature Out of Range

Summarized from 49CFR Part 40) and adapted to non-DOT collections. We model DOT protocols for all collections.  The collector may terminate the process at any point if the donor does not cooperate. Temperature Out of [...]

Understanding Drug Test Results

Positive – Presence of drugs above the cutoff level Adulterated – Something has been done to alter the sample Shy Bladder – Inability to provide a sample Substituted Specimen / Invalid Specimen – Substance provided [...]

2022 DOT Random Testing Rates

The following chart outlines the annual minimum drug and alcohol random testing rates established within DOT Agencies for 2022. DOT Agency 2022 Random Drug Testing Rate 2022 Random Alcohol Testing Rate Federal Motor Carrier Safety [...]

Do You Have Signed Receipt From Every Driver?

Question 1: If a driver refuses to sign a statement certifying that he or she has received a copy of the educational materials required in §382.601 from their employer, will the employee be in violation [...]

What are drug test cutoff levels?

Drug testing detects the presence of drugs and drug metabolites using cutoff levels to determine whether a specimen tests positive or negative for the use of a specific drug. A cutoff level is a threshold. [...]