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.
Integumentary System. Alcohol causes dilation of blood vessels, which causes flushing (reddening) of the skin. The body also suffers from heat loss and hypothermia (lowered body temperature). The capillaries of the skin may be broken which is also a result of alcohol use.