Breathalyzer & PEth Blood Testing
DOT Regulated Part 40
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Breathalyzer
Breath alcohol testing devices, commonly referred to by the brand name “Breathalyzer,” measure the amount of alcohol present in the bloodstream. Blood alcohol concentration (BAC) is determined by blowing into the device, and the result is presented as a number indicating the level of alcohol in the blood. The legal limit for impaired driving is typically set at a BAC of 0.08%.
Under U.S. Department of Transportation (DOT) regulations, a positive alcohol test—often defined as a BAC of 0.02% or higher—requires the individual to be removed from driving or other safety-sensitive duties. Depending on the level of alcohol detected, DOT regulations may mandate removal from these tasks for a specified period.
Breath alcohol tests reflect current impairment or intoxication levels, rather than past usage
PEth Test (Up to 2-4 Weeks)
D-TAP Drug Testing provides PEth testing through dried blood spots and whole blood (venipuncture). Phosphatidyl ethanol (PEth) is a long-term alcohol biomarker formed in red blood cells as part of the cell membrane. PEth can typically be detected in blood for up to 2-4 weeks, although in certain cases, it may be detectable for up to 6 weeks or longer.