Multiple reaction monitoring ion chromatograms for THCVCOOH, THCCOOH-gluc, THC-gluc, THCCOOH, THCAA and 11-OH-THC in urine showing blank urine, limits of quantification and an authentic urine specimen collected from a participant 20 h after a vaporized 54 mg THC dose. All analytes were less than limits of quantification for blank urine extracts.