Paper spray mass spectrometry is a direct analysis method in which compounds are extracted and ionized from biofluids dried on paper. It is an attractive option for performing rapid drug screening because it is fast (the entire sample analysis takes <2 minutes), simple (there is no sample preparation or chromatography), and sensitive (low ng mL 1 levels of many drugs can be detected from dried blood spots). In the current study, 134 drugs and drug metabolites commonly encountered in forensic toxicological analyses were spiked into blood at concentrations reasonable for post-mortem drug screening applications. Detection of some 130 drug and drug metabolites using a single paper spray MS/MS was shown for these spike and recover experiments. (publisher abstract modified)
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