McMillin GA, Marin SJ, Johnson-Davis KL, et al. A hybrid approach to urine drug testing using high-resolution mass spectrometry and select immunoassays. Am J Clin Pathol. 2015;143(2):234-240.
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McMillin GA, Marin SJ, Johnson-Davis KL, et al. A hybrid approach to urine drug testing using high-resolution mass spectrometry and select immunoassays. Am J Clin Pathol. 2015;143(2):234-240.