Authors: Caplan, YH Goldberger, BA

Citation: Yh. Caplan et Ba. Goldberger, Alternative specimens for workplace drug testing, J ANAL TOX, 25(5), 2001, pp. 396-399

Authors: Cook, JD Caplan, YH LoDico, CP Bush, DM

Citation: Jd. Cook et al., The characterization of human urine for specimen validity determination inworkplace drug testing: A review, J ANAL TOX, 24(7), 2000, pp. 579-588