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Representing Alabamians charged with DUI for more than 35 years
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  • Home
  • About Us
    • About Reggie
    • Monthly Payment Plans
    • Courses
    • Links
    • Website Disclaimer
    • Alabama DUI Legal Network
  • Case Results
  • Testimonials
  • Free Case Review
  • Alabama DUI Lawyer
    • DUI Questionnaire
    • DUI Overview
    • Timeline
    • DUI FAQ
    • DUI Testing
    • Laws
  • MIP
  • Cities/Counties
    • A – D
      • Autauga County or Prattville
      • Auburn University
      • Baldwin
      • Bibb
      • Bessemer
      • Birmingham
      • Brookwood
      • Calhoun County or Anniston
      • Carrollton
      • Centreville
      • Cherokee County or Centre
      • Chilton County or Clanton
      • Colbert County or Tuscumbia
      • Dallas County or Selma
      • DeKalb County or Ft Payne
    • E – L
      • Etowah County or Gadsden
      • Eutaw
      • Fayette
      • Franklin County or Russellville
      • Gordo
      • Greene
      • Gulf Shores
      • Hale
      • Houston County or Dothan
      • Huntsville
      • Jackson County or Scottsboro
      • Jefferson
      • Lake View
      • Lamar
      • Lauderdale County or Florence
      • Lawrence County or Moulton
      • Lee County or Auburn
      • Livingston
    • M – W
      • Macon County or Tuskegee
      • Marengo
      • Marion
      • Marion County or Hamilton
      • Marshall County or Guntersville
      • Mobile
      • Montgomery
      • Moundville
      • Northport
      • Pickens County
      • Reform
      • Shelby County
      • Hoover
      • Sumter County
      • Talladega County
      • Tuscaloosa
      • University of Alabama
      • Winston County or Double Springs
      • Woodstock
      • Vance

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Alabama DUI Testing

Breath and Blood Tests

Breath testing devices used by law enforcement can be inaccurate because of the assumptions that all people metabolize alcohol at the same rate, ate the same amount of food, have the same metabolisms; and drank the same amount of alcohol. 

Blood testing, produces a much more accurate result. But the results are often typically higher than those obtained by a non-contaminated breath test.

The validity of breath testing rests on assumptions that can be attacked by an experienced DUI attorney in a wide variety of cases.



Common Challenges To Breath Tests:


1. The Machine Was Not Properly Operated


2. The Machine Was Not Properly Maintained


3. The Machine Was Not Properly Calibrated


4. The Machine Was Affected By Radio Frequency Interference (Police Radio etc.)


5. The Machine Has An “Acceptable” Range Of +/- .02%


6. Your Body Temperature Was Greater Than 98.6


7. You Were Tested Within 2 Hours From Your Last Drink


8. You Have Medical Or Dental Problems That Make You An Improper Candidate For Breath Testing


9. The Officer Did Not Have You Under Continuous Observation For 20 Minutes Prior To Giving You The Breath Test


10. Your Symptoms And Drinking Pattern Are Inconsistent With The Test Result


11. Manufacturer does not warrant that the Intoxilyzer is fit for any particular purpose
12. Intoxilyzer is capable of breath preservation, however, DPS purposely fails to require the breath specimens to be saved, therefore, no independent testing can be done
13. Residual alcohol in the mouth increased the result.

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Monthly payment plans are available for Alabama DUI defense.  Our Alabama DUI defense payment plans are set up in-office on a case by case basis.  Please contact The Smith Law Firm for complete details on our driving under the influence monthly payment plans for legal defense.


Field Sobriety Tests


Standardized field sobriety tests (“SFST”) are what the police use to try to determine if a person is intoxicated.  The only three SFSTs are as follows:

1. Horizontal gaze nystagmus (HGN) test

2. One-leg stand test


3. Walk and turn test

These three tests were developed by researchers funded by the National Highway and Traffic Safety Administration (NHTSA).  It is this research that the police and prosecutors use to try and prove that a person is intoxicated. 

SFST’s are standardized because:


1. Tests are administered in the prescribed, standardized manner

2. Standardized clues are used to assess the suspect’s performance

3. Standardized criteria are employed to interpret that performance

If any one of the standardized filed sobriety test elements are changed, the validity is compromised.  See NHTSA DWI Detection and Standardized Field Sobriety Testing Manual.

At The Smith Law Firm we study and apply the NHTSA DUI Manual to your case.  Therefore, we know when an officer has failed to administer a SFST properly and can try to either get evidence thrown out of court or show how the tests were not administered properly so the results of the tests were compromised and therefore invalid.

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