Skip to Content
SCHEDULE YOUR CONSULTATION TODAY! 562-330-4173
Top

The Effect of Body Temperature on Breathalyzer Tests

In the September 1982 edition of the Michigan Bar Journal, An article entitled “Body Temperature and the Breathalyzer Booby-Trap” discussed the factor of body temperature with regard to breath-alcohol testing. The common body temperature of a DUI suspect in San Francisco is approximately 37 degrees Celsius (98.6 degrees Fahrenheit). An illness can cause an increase of approximately 1 degree Celsius (1.8 degrees Fahrenheit). The increase may seem minimal, but it can greatly affect the 1:2100 blood-to-alveolar air ratios used by the breathalyzer. This effect can increase the test results up to 7%.

Air sacs in your lungs, known as alveoli, are where the exchange of gases between blood and expired alveolar air occurs.

A direct correlation is assumed between the concentration of alcohol in the alveolar air and concentration of alcohol in the blood, more precisely, ethanol. This assumption is based on Henry’s Law, which states that, at constant temperature, the concentration of gas dissolved in a liquid is proportional to its concentration in the air directly above the liquid.

– Srikumaran K. Melethil, Ph.D., Professor of Pharmacology at the University of Missouri, Kansas City

Therefore, when finding your blood-alcohol content, the larger the concentration of alcohol in your blood, the larger the concentration will be in expired alveolar air.

Learn more about the weaknesses of breathalyzer test results by speaking to The Law Offices Of Taylor & Taylor online or calling (562) 330-4173.

Continue Reading Read Less
    "This is a top level law firm. The Bible of DUI's comes from this firm!"

    This is a top level law firm. The Bible of DUI's comes from this firm! These are the guys other attorneys call when they are ...

    Tania C.
    "They will fight strategically to help you win your case."

    These are the best lawyers in LA/OC when it comes to DUI cases. They will fight strategically to help you win your case. My ...

    Kendall L.
    "Christopher always made me aware of what was going on with my hearings, and got me the best outcome possible."

    When you need to get a lawyer, you aren't usually in a great situation. I wasn't at least. Christopher and his team never ...

    Jessica S.
    "Chris not only got me down to a Wet Reckless but was able to significantly reduce the penalties I would face."

    Im am so glad that I read the reviews of Taylor and Taylor after my first "incident" and immediately contacted them. Chris ...

    Suzi J.
    "I have come across many attorneys in my life and I have never been treated as well as I have her"

    I have come across many attorneys in my life and I have never been treated as well as I have here. Every phone call was ...

    Anthony D.
    "Won DMV hearing and got my case expunged for a minor issue"

    Truly great team of lawyers. Handled everything the very best they could. Won DMV hearing and got my case expunged for a ...

    Nick T.
    "Mrs. Normandeau is by far the hardest-working and most diligent attorney I have ever met."

    I cannot express enough gratitude towards Taylor and Taylor's Attorney, Jeanne Normandeau. I hired Mrs. Normandeau for a VERY ...

    Bruce R.
    "I would recommend this firm with no qualms!"

    I received counsel in a sensitive legal matter from Lawrence Taylor Sr., and his advice was spot on. I did some research and ...

    Jerry S.
    "Jeanne Normandeau is a great lawyer. She knows how the Riverside court judges work."

    Jeanne Normandeau is a great lawyer. She knows how the Riverside court judges work. She will fight for you and will get you ...

    Joe E.
    "Thankfully Mr. Taylor was able to help fight my case without me ever having to go to court"

    You should never drink and drive anywhere, but especially don't do it in la Jolla! Cops down here have nothing better to do ...

    Steven K.

Tailored Defense For You

Whether you have questions or you’re ready to get started, our legal team is ready to help. Complete our form below or call us at (562) 330-4173.

  • Please enter your first name.
  • Please enter your last name.
  • Please enter your phone number.
    This isn't a valid phone number.
  • Please enter your email address.
    This isn't a valid email address.
  • Please make a selection.
  • Please enter a message.
  • By submitting, you agree to be contacted about your request & other information using automated technology. Message frequency varies. Msg & data rates may apply. Text STOP to cancel. Acceptable Use Policy