Detection Windows The window to detect the presence of a particular drug in a personâs urine is highly dependent on multiple factors, such as: Hydration-More dilute urine from high fluid intake may cause dilution of drug and therefore a negative result due to levels present but below the cutoff.
Alcohol flush reaction. Alcohol flush reaction is a condition in which an individual develops flushes or blotches associated with erythema on the face, neck, shoulders, and in some cases, the entire body after consuming alcoholic beverages.
The ethanol content in alcohol that is meant for consumption causes the release of Dopamine in the brain. Dopamine is a neurohormone whose increased release causes the heart rate and blood pressure to increase. This gives the initial flushed feeling and imparts a sudden warmth to the face and extremities of the body.