Specializing in
DUI/DWI Evaluations


[Std Sobriety Tests] [ Alcohol/Drug Effects] [ Direct Breath Testing]

Standardized Field Sobriety Tests Battery (SFST)
  • Horizontal Gaze Nystagmus
  • Walk and Turn
  • One Leg Stand

Has the law enforcement officer received the required comprehensive training to administer the SFST battery?

If the law enforcement officer has not administered and evaluated the SFST battery in the required standardized manner, he/she will not obtain the validated indicators of impairment based on scientific research. Therefore, he/she has invalid test(s).

SFST Testing


Direct Breath Testing

Breath tests must be administered by approved methods and standards.

Was DIRECT observation made of the person to be tested by the officer for the required 15 minutes prior to the administration of the breath test?

Did the officer ask and or inspect the persons mouth to insure nothing foreign was introduced into the mouth prior to testing?

There are three possible relationships between alcohol concentration at time-of-test vs. time-of-arrest:


Effect of Alcohol/Drugs on the Human Body



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