Test performed include:
1) Immunoassay presumptive screen for 11 drug classes, followed by quantitative confirmation by liquid chromatography methods (if needed)
2) Full-scan qualitative time-of-flight liquid chromatography mass spectrometry (LC-MS-QToF) to definitively detect a broad range of drugs that comprises
168 drugs and covers over 22 classes of over-the-counter, prescription, and illicit drugs encountered in our patient population.