Step 1: Sample decontamination Washing the hair specimen with 1 ml methanol for 15 min at 37 °C followed by three 30 min washes with phosphate buffer (pH 6) at 37 °C to remove any externally bound.
Step 1: Sample decontaminationWashing the hair specimen with 1 ml methanol for 15 min at 37 °C followed by three 30 min washes with phosphate buffer (pH 6) at 37 °C to remove any externally bound.