ETX 20 Lecture Notes - Immunoassay, Gas Chromatography, Enzyme

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Alcohol and drugs of abuse january 27, 2014. Chemical methods for the isolation and identification of biological fluids. Distribution: distributed via blood to tissues muscles and organs. Women will get higher bac from same amount of alcohol, woman will have higher bac. Blood kit (special tube) sample the space above the blood, and the alcohol that is within the blood will be proportional to the e% bac. A snapshot of the % alcohol in the blood at t the blood draw. The gas chromatograph monitors the headspace auto samples. The column separates any mixtures and delivers the samples. Breath analysis at body temp etc: used to be infrared, new ones electrochemical fuel cell. What is testified @ in court: chemical test, observed driving pattern, objective signs and symptoms, drinking history. Women are about 55 % water, men are about 68% Step 1: presumptive screening for major drug classes. Most labs are going to use immunoassays for presumptive screening.

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