You should be sober during these examinations
Sobriety recommendations can vary widely depending on what your doctor plans to do. You should have one large or small blood count determined are – i.e. blood is drawn – drinking is allowed, but you shouldn’t eat anything regarding eight hours beforehand. The reason: When digesting food, many metabolic processes take place in our body that break down complex carbohydrates into sugars that we can use. Our blood is then full of sugar and insulin. Depending on what and when we ate, these blood sugar levels can be very high. But that would falsify the blood values. However, your doctor will want to see what is going on in your blood when no metabolic processes are taking place. Therefore, when taking blood: Drink water or unsweetened tea, however, do not eat for up to eight hours before the blood sample is taken.
Also exciting: This means the leukocyte count of your blood > >
The recommendations above are somewhat stricter Ultrasound examinations of the abdomen or gastroscopies. Here applies up to regarding six hours before the examination: do not drink or eat anything. Fluid in the stomach might distort the ultrasound images. If cameras are guided through the esophagus into the stomach, it is of course better for the diagnosis if there is no food in the stomach.
However, with such procedures, you usually get but accurate information from your doctor or health care professional regarding the precise preparation. Also at colonoscopies you will be informed in advance regarding what you should eat and drink and how long before the examination you are not allowed to eat anything.
