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Dayton DUI Attorney Charles Rowland > Posts tagged "drug tests"

Gas Chromatography Mass Spectrometry (An Overview)

To fully comprehend the processes of chemical testing, your DUI attorney should understand gas chromatography - mass spectrometry. Gas chromatography mass spectrometry (hereinafter GCMS)  is a method that combines the features of gas-liquid chromatography and mass spectrometry to identify different substances within a test sample.  GC-MS has been widely heralded as a "gold standard" for forensic substance identification because it is used to perform a specific test.Ohio Administrative Code 3701-53-03(A) sets forth the techniques and methods for determining the concentration of alcohol in blood, urine and other bodily substances.  Pursuant to that rule, Ohio allows for testing including gas chromatography and enzyme assays.  The GCMS instrument is...

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DUI Science and Blood Contamination

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 sample thereby falsely inflating the amount of ethanol therein.  This article will focus on the physical contamination that may cause...

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Morphine, Heroin and the Horizontal Gaze Nystagmus

In the past years, my office has seen an increase in the number of “drugged” driving cases we receive. While arrests for marijuana make up the vast majority of those cases, we are also seeing a dramatic rise in prescription drug cases along with traffic stops implicating harder drugs such morphine and heroin.As with other impaired driving cases, it is vital that you know the observations that would be consistent with impairment by that drug.  It is also vital that you determine if the “standardized field sobriety test” protocol adopted in Ohio is applicable in recognizing clues of impairment due...

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DUI Crime Lab Requirements, O.A.C. 3701-53-06

[caption id="" align="alignright" width="210" caption="Image via Wikipedia"][/caption]O.A.C. 3701-53-06 sets forth the lab requirements for proper testing in DUI cases Ohio Administrative Code 3701-53-06 (formerly O.A.C. 3701-53-05) contains the requirements for laboratories who administer alcohol and drugs tests.  Section (A) sets forth the rules that labs must keep chain of custody records and test results for three (3) years.  All positive blood, urine and other bodily substances shall be retained for a period of not less than one year.  Section (B) requires lab proficiency.  Section (C) requires that,"[t]extbooks and package inserts or operator manuals from the manufacturer...

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