Enzymatic Immunoassay (EIA) is a quick and indirect means of determining ethanol content. It’s original development was strictly for the purposes of a very quick determination of whether or not there was the possibility that there was ethanol in a patient. It was designed for the clinical emergency environment where we need a very quick […]
Retesting Blood Alcohol Results
Sometimes, one of the scariest tests in the forensic science world are the more “routine” ones, such as Blood Alcohol analysis (meaning EtOH). There are such high demands in terms of throughput and such little real training in analytical chemistry in performing the assay given to the analysts that the potential for error is rather […]
Passive marijuana smoke leads to positive test that is misinterpreted as a probation/parole violation or being DUID
It is one thing to have a result. It is a whole other thing to know what to do with it. This blog post will consider the case of positive test results and the limits of interpreting the significance of those results in various contexts. It is estimated that as of 2009, one out of […]
A screening test for possible drug presence is not a confirmation test
Enzyme immunoassay (EIA) or Enzyme-Linked Immunosorbent Assay (ELISA) (ELIA) is often a colormetric test whereby an enzyme is added to the prepared unknown and the reaction that occurs is either positive or negative. Assay Principle: ELISA assays operate on the basis of competition between the drug or its metabolite in the sample and the drug-enzyme […]
Lecture on Analytical Chemistry in BAC testing Part 8
The above is Part Eight from a lecture given by Attorney Justin J. McShane before the North Carolina Advocates for Justice “Advanced DWI Seminar”. This seminar happened on February 26, 2010. It was organized and hosted by John K. Fanney, Esquire of Fanney & Jackson, P.C. The following is a transcript of this video: The […]
Lecture on Analytical Chemistry in BAC testing Part 7
The above is Part Seven from a lecture given by Attorney Justin J. McShane before the North Carolina Advocates for Justice “Advanced DWI Seminar”. This seminar happened on February 26, 2010. It was organized and hosted by John K. Fanney, Esquire of Fanney & Jackson, P.C. The following is a transcript of this video: One […]
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