According to various local news sources, a majority of drunk driving alcohol tests performed by the Michigan State Police (MSP) between December 15, 2015 and April 23, 2016, were recently discovered to be inaccurate. These findings were reported in the Detroit Free Press, Detroit News, and on MLive.com. Of the 2,748 tests administered that measured BAC values above zero, a whopping 2,007 were found to have the wrong results. That's almost 3 out of 4 tests. This inaccuracy was supposedly due to the MSP Forensic Science Division's incorrect calibration model used to measure BAC levels.