Blood alcohol concentration (BAC) is the amount of alcohol in a person’s bloodstream. A BAC above 0.40% is considered dangerous. In some cases, it may prove fatal if a person does not receive ...

Forbes contributors publish independent expert analyses and insights. Dr. Omer Awan is a practicing physician who covers public health. For most Americans, alcohol has historically been perceived as ...

Several tests measure the level of alcohol in your blood. These procedures are typically simple but may take several weeks to get results. A blood alcohol test measures the percentage of alcohol in a ...