The OCIGO breathalyzer can be used as a stand-alone device, showing the user’s alcohol level on its built-in OLED display, or connected to an application that provides a history of alcohol consumption and advises the user if the limit is exceeded. The most interesting feature of the application is the one that predicts when the alcohol level returns below the legal limit and returns to zero. What principles does the application use to provide such information? Find out how it works in our article.

Ingestion and digestion of alcohol


As soon as it is ingested, the alcohol quickly enters the bloodstream, passing through the mucous membranes of the mouth and oesophagus. It is then absorbed into the bloodstream in the stomach and intestines and transported to the various organs. When it is ingested with food, this assimilation is slower and the passage into the bloodstream is slower. The blood alcohol level reaches its maximum 1 hour after ingestion.

A person’s alcohol impregnation varies according to their weight, their gender and their condition when drinking (fatigue, illness…).  For a rather thin person, a glass of alcohol can correspond to 0.04 %BAC while for a slightly stronger person, it can correspond to 0.06%BAC.

The elimination of alcohol is produced to 10% by the lungs with exhaled air, the kidneys by urine and the skin by sweat. The liver is responsible for eliminating most of it through enzymes by following this process:

  1. The enzyme alcohol dehydrogenase (ADH) converts alcohol into acetaldehyde.
  2. The enzyme acetaldehyde dehydrogenase (ALDH) converts acetaldehyde into acetate (= acetic acid).
  3. Acetates are transformed into acetylcoenzyme A

It accumulates fatty acids in the liver and is therefore responsible for illnesses when alcohol is consumed excessively and regularly*.

It is assumed that in 1 hour, a person with moderate consumption eliminates 0.024 %BAC (0.03 %BAC if they have eaten while drinking).

How to predict the desorption of the alcohol consumed?

Many scientific studies analyze the trend curves of alcohol elimination.  By correlating them with the calculation formulas, this allows us to apprehend the estimation of the alcohol elimination trend curve.

Further information

The coefficient β depends on the user’s situation and is determined on the result page of the application:

• If he does not declare having eaten, the coefficient β will be 0.024 %BAC per hour.

• If the user declares having eaten by clicking on the meal icon, the coefficient β will be 0.03 %BAC per hour.

Prediction feature on the OCIGO application

Blow and know your blood alcohol level immediately

The application helps you make the right decisions if your blood alcohol level is above the legal limit

The application predicts how long it will take you to return below the legal rate and to zero

OCIGO: the electronic and connected breathalyzer that keeps you safe and secure

OCIGO is the only French breathalyzer with miniaturized infrared spectroscopy technology, similar to that used by law enforcement authorities. This technology guarantees measurements always reliable and precise. Easily transportable and easy to use, the OCIGO breathalyzer becomes your new companion for your outings.

The OCIGO application is available on the Apple and Google Store.

*Sources :
L’alcool dans le corps – effets et élimination, Institut suisse de prévention de l‘alcoolisme et autres toxicomanies, Lausanne, 2004
Alcohol, its absorption, distribution, metabolism, and excretion in the body and pharmacokinetic calculations – Alan Wayne Jones, May 2019, DOI: 10.1002/wfs2.1340