> > Drug tests generally produce false-positive results in 5% to 10% of cases and false negatives in 10% to 15% of cases, new research shows. > Lots of innocen

> > Drug tests generally produce false-positive results in 5% to 10% of cases and false negatives in 10% to 15% of cases, new research shows. > Lots of innocent people were probably jailed because of that. Efforts to increase the accuracy of the tests have downsides too, since the tests are already too sensitive. Lots of people have lost their jobs due to erroneous true positive results from eating something like a poppyseed bagel. The test result is erroneous because no drugs were used, but a true positive because the trace amounts detected from the poppy seeds were actually present. Improving the test can't fix this.