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. Author manuscript; available in PMC: 2023 Aug 1.
Published in final edited form as: Ann Emerg Med. 2023 Apr 13;82(2):121–130. doi: 10.1016/j.annemergmed.2023.03.005

Table 4.

Comparison of whole-blood cannabinoid concentrations during symptomatic episodes and asymptomatic periods in 34 participants with cannabis-related cyclic vomiting.

Symptomatic Baseline
 Asymptomatic Follow-up
Mean (95% CI) Median (IQR) Mean (95% CI) Median (IQR)
Delta-9-THC 9.3 (2.4, 16.1) 5.6 (3.3, 9.7) 9.9 (6.4, 13.3) 5.8 (2, 14)
11-nor-9-carboxy-delta-9-THC* 69.6 (50.1, 89.2) 58.0 (28,82) 91.3 (61.6, 121.0) 71.0 (31, 135)
11-hydroxy-delta-9-THC* 2.3 (1.5, 3.2) 1.6 (1,0, 3.4) 4.7 (2.8, 6.5) 3.2 (0,7.2)
*

Statistically significant differences were found in THC-metabolite concentrations using t-tests and signed-rank tests.