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Denver DUI Attorney, Chris Cessna
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Denver DUI Lawyer

Blood & Breath Test in a Denver DUI Case 

In order to be arrested for DUI, an officer must establish that your blood alcohol concentration (BAC) is .08 or higher.  There are two types of chemical tests used to determine a driver’s BAC level: a breath test and a blood test.

Watch our video about Breath Tests

Watch our video about Blood Tests

Breath Test

A breath test is performed by blowing into a machine, also called at breathalyzer, which measures the amount of alcohol in the blood by testing the air being exhaled.  If the results of the test indicate that your BAC is .08 or more, you will be placed under arrest for DUI.

If you took a breath test and were then arrested on DUI charges, do not despair.  Breath tests are not 100% accurate, and there are many factors that can cause a breathalyzer machine to give a false reading, including - Watch Our video about faulty test results!

  • The officer wasn’t properly trained on how to use the breathalyzer machine
  • The officer wasn’t properly trained on how to administer the test
  • The officer made a mistake when administering the test
  • The machine wasn’t calibrated correctly
  • Machine errors, defects, or malfunctions
  • Radio frequency interference

Blood Test

A blood test is conducted by drawing a sample of the driver’s blood, which is tested to determine the amount of ethanol alcohol in the body.   Like a breath test, blood tests are not immune to inaccuracies and errors.  Although blood tests are arguably more accurate than breath tests, there are still a number of factors that could cause the results of a blood test to be inaccurate, such as contaminated testing equipment, broken or defective testing equipment, too much time elapsing between the arrest and when the test was taken, technician error, etc. 

Contact a Denver DUI Attorney - Boulder DUI Lawyer

If were arrested for DUI after submitting to a breath or blood test, Denver DUI lawyer Chris Cessna can provide you with the experienced and aggressive defense you need to fight your charges.  As a former DUI police officer, Mr. Cessna was trained and certified to operate the Intoxilyzer 5000, and he received more training when he began working as a district attorney.  Furthermore, Mr. Cessna is one of only two lawyers in Colorado who owns his own Intoxilyzer 5000, and who is actually certified by the state and federal government to operate and maintain it.  Mr. Cessna’s experience and training in breath and blood testing has given him the insight needed to effectively fight his clients’ charges, and help them avoid a DUI conviction that would undoubtedly result numerous penalties.

Contact Denver DUI attorney Chris Cessna at (303) 456-1600 for more information about retaining his DUI defense services.