FAQ
Yes of course. But the test result can only be used as a guideline for blood alcohol content and not as legal evidence.
This often causes confusion because there are different ways to display the alcohol content.
In Belgium and the Netherlands the limit is 0,5 ‰ (per mille) = 0,50 mg/ml (mg alcohol per ml of blood) = 0,5 g/l BAC (blood alcohol content). Above that, it is punishable to participate in traffic.
However, the alcohol content is initially measured in the exhaled alveolar air (AAG) and is then converted to BAC by the device. This conversion differs per country.
In the Netherlands and Belgium, 0,5 ‰ BAC is equal to 220 µg/l or 0,22 mg/l AAG
In addition, other limit values apply to certain groups:
Netherlands: novice drivers: 88 µg/l or 0,2 ‰
Belgium: professional drivers: 88 µg/l or 0,2 ‰
If you want to know more about this conversion, you can find more information here
These are the alveoli in the ends of your lungs. The alcohol enters the lungs via exchange with the blood vessels.
Variables such as body weight, metabolism, stomach filling, physical condition and especially time influence the alcohol content.
You probably measured mouth alcohol during the first test, which gives a higher result. In addition, the body has already processed some of the alcohol previously consumed.