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What companies use hair drug testing? Anheuser-Busch, the Federal Reserve, General Motors, Blockbuster, the Boston PD and the NYPD to name a few. Thousands of corporations have begun to use hair follicle testing instead of urine testing to evaluate whether their employees and potential employees use drugs. This is because hair follicle testing is less [...] Before you begin, it is best for the subject to have washed their hair recently and for it to be free of styling products as well. Keep in mind, it takes 4-5 days for more recent drug use to be in the hair follicle and therefore only the use that occurred before that time will [...] |
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