Factors that affect your blood alcohol content after drinking

by Aaron Black • March 01, 2018
Blood alcohol contentIf you are pulled over for a DUI in Scottsdale, AZ the officer will ask you to consent to a portable breath test (PBT) to check your blood alcohol content.

Blood alcohol content is the concentration of alcohol in a person’s blood and is usually measured as mass per volume. For example, a BAC of 0.08 grams of alcohol per 100 grams of an individual’s blood, or .8 grams of alcohol per 1000 grams of blood.

Your blood alcohol content (BAC) can be affected by several factors including the following.

Factors that affect your BAC

  • Gender - The Portable Breath Test (PBT) alone was initially designed for an “average man’s” lung capacity. A woman’s lung capacity is smaller than a man’s, and because of this when a woman blows into the breathalyzer, it can cause it to read at a much higher level.

    Simply put, the breath machines do not differentiate breath samples between males and females which could make the test inaccurate in determining the actual blood alcohol level of a woman.
  • Age – As you age, the effects of alcohol become pronounced increasingly
  • Type of drink – The more alcohol a drink contains, the more that will end up in your blood stream
  • Food – Food slows the absorption of alcohol in your bloodstream. If you drink on an empty stomach, your BAC will be higher than the person that ate before drinking.
  • Metabolism – “Metabolic tolerance” varies from person to person. A person’s metabolism describes the rate at which the alcohol is processed by the body.
  • Medication – Depending on the medications you are taking, the can intensify the effects of alcohol as well endanger your health.
  • Stress – Your emotional state can cause your body to divert blood from your stomach and small intestines to your muscles which slows down the absorption of alcohol in your blood stream. Once you calm down, your blood will flow normally, and you may experience a surge in your BAC.
There are several other factors that can contribute to your BAC. The bottom line is if you are planning a night out drinking make plans ahead of time to get you home safely to ensure that you won’t be blowing into a breathalyzer at the end of the night.

What if I refuse the PBT?

Contrary to popular belief, you have the right to refuse the field sobriety test as it is only used by the police to obtain a probable cause to arrest you and it is not admissible in court.

Although most believe that your license will be suspended if you refuse the PBT in Scottsdale, AZ. That just isn't true.

I encourage you to refuse the test and ask to speak to a lawyer.

Experienced DUI Attorney

If unfortunately you have been charged with a DUI you should immediately seek an experienced DUI attorney.

I personally represent my clients with the goal of keeping them out of jail and dismissal of their case. I do not care if my client committed a crime and it’s not even a question I ask.
As a DUI Defense attorney, my job is to make sure that my client's rights are protected while in the court system.

Representing clients in Phoenix and surrounding areas that include Apache Junction, Avondale, Chandler, Gilbert, Glendale, Goodyear, Mesa, Peoria, Phoenix, Scottsdale, Surprise, and Tempe, Arizona, I will "Deliver Justice and Defend Your Freedom.”

When your freedom is at risk, contact DUI Defense Attorney Aaron Black or call 480-729-1683 to set up a free consultation.

About the Author

Aaron Black is the founder and sole attorney of the Law Office of Aaron Black. Located in Phoenix, Arizona, his DUI and criminal defense law firm provides legal services to people who have received felony or misdemeanor charges from the state.

Aaron has developed a strong interest in defending people who have been arrested and received criminal charges for driving under the influence. With his professionalism and knowledge of Arizona DUI and criminal law, he has acted as a check and balance on the police, prosecution and courts and has protected a great number of his clients from excessive and unfair sentencing.

Along with DUI defense, Aaron handles a range of other criminal matters, including aggravated assault, burglary, domestic violence, drug possession, drug trafficking, fraud defense, insurance fraud, sex crimes and white-collar crime.

After graduating college in 2003 from the University of Arizona, Aaron decided to pursue a law degree. He followed a family long tradition and went to the University of South Dakota School of Law where he pursued his goal of becoming a criminal defense lawyer.

After passing the Arizona and South Dakota bar exams, Aaron joined the Maricopa County Office of the Public Defender where he defended hundreds of people charged with serious criminal offenses. His work as a public defender helped him sharpen his litigation skills and gave him a unique insight into the Arizona criminal justice system.

Over the course of his 15-year legal career, Aaron has spent a considerable amount of time in both Arizona justice, municipal, state and federal courts. He has argued over 50 jury trials, tried over 100 bench trials and has become one of the highest-rated criminal and DUI defense attorneys in Phoenix and the surrounding areas. He has received a 10/10 rating from the legal directory Avvo because of his legal background and successful case record. Since 2014, he has received the Super Lawyer rating for his work as a Phoenix DUI and criminal defense attorney.

You can review Aaron’s Attorney Bio page for more information about his background, education and experience as a Phoenix DUI and criminal defense attorney.
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