Phase two questions inquired about any behavior change towards illicit drug use potentially triggered by the results of fentanyl urine testing [3–5]. All information collected was anonymous and self- reported. An acronym was used to link phase one and phase two surveys. The semi-structured ...
SubstanceAcronymCAS NumberMatrixLOQ (μg/L) lead Pb 7439-92-1 whole blood 2.1 cadmium Cd 7440-43-9 whole bloodfirst-morning void urine 0.060.05 mercury Hg 7439-97-6 first-morning void urine 0.02 chromium Cr 7440-47-3 first-morning void urine 0.2 CAS – Chemical Abstract Service. To qua...