Michigan Law requires that prior to the administration of a Datamaster test officers must monitor the person submitting to the test for the 15 minutes prior to the datamaster administration. A datamaster is a test that is often times administered at the jail after an individual has been arrested for Operating Under the Influence of Liquor. While Datamaster results are admissible in any civil or criminal case, the admissibility is not absolute. Datamaster results are admisibile only if
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