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.
Flushing, also called âplethoraâ occurs when the blood vessels beneath the skin surface become dilated for any reason. This process can occur as a normal response to intense emotions, such as embarrassment, anger, guilt, anxiety or stress. Flushing is also a normal response to physical stimuli or events, such as sexual arousal, high environmental temperatures, exercise, or consumption of certain foods and alcohol.