DUI & Criminal Defense

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DUI LIBRARY: Forensic Science


The Essential Guide (2020)


In this essential guide, you will find:

  • Clear explanations of how science is supposed to work.
  • Explicit illustrations revealing why many forensic tests don’t show what they claim.
  • Step-by-step processes showing how to challenge junk science.
Forensic Science

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Quality Assurance

4. Quality Assurance

Drug Blood Testing

14. Drug Blood Tests

Urine test DUI

16. Urine Testing

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Let’s define some terms. This guide provides strategies and tactics for dismantling misleading forensic claims. Here is what I mean when I say “strategy” and “tactics”.

“Strategy without tactics is the slowest route to victory. Tactics without strategy is the noise before defeat.”

-Sun Tzu, The Art of War.

Strategy is the big picture plan designed to bring about your goal. Strategy concerns “WHAT” you seek to accomplish.

Example: reveal to the jury that the government’s test result lacks scientific validity so they vote not guilty.

Tactics are the specific method, tasks and steps used to carrie out your plan. Tactics address the “WHO” and “HOW” to get your strategy done.

Example: cross examination questions which forced the “expert” to admit he does not know the basic requirements needed for his alleged scientific opinions.


Field Sobriety Tests


The results of roadside tests police have people suspected of being impaired are often given much more weight than they deserve.

  • Walk & Turn
  • One Leg Stand
  • Unstandardized Tests

A Representative Sample

A representative sample is one that accurately reflects a larger population or amount.

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DUI LIBRARY | Daubert & Rule 702 Challenges

Daubert Challenges: The Definitive Guide (2019) _________________________________________________________________________________________________________________________________ A trial court’s decision whether or not to permit expert testimony is critical to the outcome of any

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