Tag Archives: scientific defenses to a dui

DUI Science and Blood Contamination

Blood Sweat and Tears. Number 2

The practice of modern DUI law involves understanding the various scientific tests that have become commonplace in forensic collection and storage of specimens for alcohol analysis.  Specifically, DUI attorneys must understand that contamination can increase the concentration of ethanol in a specimen.  Typically, contamination takes one of two forms.  The first is straight-forward physical contamination which may manifest itself before, during or after collection.  The second form of contamination occurs when microorganisms contaminate a sample and produce ethanol in the [Read the full post. . .]

DUI Blood & Urine Testing: Understanding Gas Chromatography

Gass chromatographer - oven with capliary colu...

If you have been arrested for a DUI involving blood testing you may encounter a testing procedure known as Gas Chromatography.  Gas Chromatography is the most reliable method for alcohol testing in blood and urine and has become the accepted gold standard in forensic toxicology.  Gas chromatography specificity for ethanol (drinking alcohol) is very good and this method can also identify and quantify other organic or interfering substances such as methanol and isopropanol. The two commonly used techniques for analyzing [Read the full post. . .]