Newer workplace drug tests using hair samples reveal 10 times as many job applicants and employees taking cocaine and methamphetamine than had been found in urine tests. Quest Diagnostics hair data for the first time shows that in the first half of 2009 cocaine was found in three of every 1,000 urine tests performed on job applicants and employees, whereas hair testing found cocaine in 32 of 1,000. For every 1,000 tests, methamphetamine showed up once in urine and nine times in hair. But overall since 1988, drug use in the workplace is down sharply. USA TODAY.