Final answer:
To determine whether a guest is ill or intoxicated, signs and symptoms are important to consider. Alcohol intoxication can be determined through measuring the blood alcohol concentration (BAC) using blood or breath testing, while illness is determined through analysis of signs and symptoms and diagnostic tests like blood and stool samples.
Step-by-step explanation:
In order to determine whether a guest is ill or intoxicated, it is important to consider the signs and symptoms they are exhibiting. For alcohol intoxication, common signs include slurred speech, impaired coordination, and an odor of alcohol on the breath. On the other hand, illness can present with symptoms such as fever, nausea, and body aches.
One way to determine alcohol intoxication is through measuring a person's blood alcohol concentration (BAC) using blood or breath testing. If the BAC is above a certain threshold, it indicates the person is intoxicated. For determining illness, medical professionals rely on analysis of signs and symptoms, and may also use diagnostic tests like blood and stool samples to identify the cause of the ailment.
It is important to note that the immediate effect of alcohol can vary depending on factors such as age, sex, and pre-existing health conditions, so it is not the same for everyone.