Human Integrity | The Science Many people think that DUI testing goes something like this:

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helpful hints Step 1:  Put blood, urine or other substance in system;

kennenlernen berufsschule Step 2: Press start button;

rencontres 19 Step 3: Computer prints out exactly what substances were found in blood, urine or other substance.

go to the website Not only is that not the case, but there is room for human error and dishonesty.  Here is a video that shows how a test can be manipulated to give a desired result.