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Correlations on radioimmunoassay, fluorescence polarization immunoassay, and enzyme immunoassay of cannabis metabolites with gas chromatography/mass spectrometry analysis of 11-nor-delta 9-tetrahydrocannabinol-9-carboxylic acid in urine specimens.
Weaver ML, Gan BK, Allen E, Baugh LD, Liao FY, Liu RH, Langner JG, Walia AS, Cook LF. Weaver ML, et al. Among authors: cook lf. Forensic Sci Int. 1991 Jan-Feb;49(1):43-56. doi: 10.1016/0379-0738(91)90170-n. Forensic Sci Int. 1991. PMID: 1851715