Simultaneous determination in hair of multiclass drugs of abuse (including THC) by ultra-high performance liquid chromatography-tandem mass spectrometry

► Hair analysis is a tool to evaluate drug exposure in several application fields. ► We present a simple UHPLC-MS/MS method to detect 13 common drugs of abuse in hair. ► The method proved excellent analytical performances and drastic reduction of time. ► High sample throughput is essential for laboratories. ► The increased global productivity makes the workplace testing of hair affordable.