Regarding the readings, there are so many factors that can have effects on the readings. The only reliable way to test a breathalyzer's accuracy is through professional lab testing which is performed before selling the products under controlled environment.


Factors that can affect the readings including:
  • Amount of alcohol consumed: More alcohol = higher BAC.
  • Body weight and composition: Heavier individuals usually have a lower BAC.
  • Gender: Women often have higher BACs than men after consuming the same amount of alcohol.
  • Rate of consumption: Drinking quickly leads to a faster rise in BAC.
  • Food consumption: Drinking on an empty stomach increases BAC.
  • Metabolism: Faster metabolism results in lower BAC.
  • Type of drink: Stronger drinks (e.g., liquor) increase BAC more quickly than beer.
  • Medications and health conditions: Certain medications and health issues can affect BAC.
  • Tolerance: Regular drinkers may not feel effects as strongly, but their BAC may still be high.
Considering all of these factors, it is not possible to determine what can be the actual reading after consuming alcohol. For example, if I drink the same amount of alcohol that I had last night, the BAC can be completely different.




The only way to determine if a unit is working accurately or not, is to send it for calibration service and test it in a lab.


If you want to book your unit in for calibration please go to Caltrace and create the calibration service for your product or simply ask our service team to create the service for you.