Table 2. Blood cannabinoid concentrations (μg/L) in chronic daily male cannabis smokers during sustained monitored abstinence.
DaynTHC11-OH-THCTHCCOOH
≥LOQ, %MedianMaximum≥LOQ, %MedianMaximum≥LOQ, %MedianMaximum
Admission3090.01.46.373.31.14.196.726.593.4
12268.21.82.931.80.70.8100.011.335.2
23080.01.22.210.00.50.6100.010.626.3
32878.61.32.63.60.50.5100.08.026.1
42878.61.12.30.0NAa<LOQ100.06.220.3
52676.91.01.90.0NA<LOQ100.05.219.4
62572.01.02.20.0NA<LOQ100.04.117.8
72479.20.92.00.0NA<LOQ100.03.114.4
82365.20.82.40.0NA<LOQ95.73.012.7
92161.90.72.00.0NA<LOQ95.22.37.6
102161.90.51.80.0NA<LOQ95.22.06.6
112171.40.51.20.0NA<LOQ95.22.06.9
122065.00.51.00.0NA<LOQ95.01.75.4
132055.00.40.80.0NA<LOQ90.01.84.3
142060.00.41.00.0NA<LOQ85.01.85.1
151872.20.40.90.0NA<LOQ94.41.55.0
161844.40.30.80.0NA<LOQ94.41.64.8
171747.10.50.80.0NA<LOQ94.11.35.2
181643.80.40.70.0NA<LOQ87.51.35.7
191442.90.40.50.0NA<LOQ85.71.14.7
201540.00.30.70.0NA<LOQ86.71.24.0
211442.90.40.50.0NA<LOQ85.71.23.4
221421.40.40.50.0NA<LOQ85.70.93.2
231323.10.40.50.0NA<LOQ84.60.83.3
241225.00.40.70.0NA<LOQ83.31.13.1
25128.30.30.30.0NA<LOQ91.70.72.5
26119.10.40.40.0NA<LOQ81.80.62.8
27100.0NA<LOQ0.0NA<LOQ70.00.72.5
28110.0NA<LOQ0.0NA<LOQ90.90.72.6
2980.0NA<LOQ0.0NA<LOQ75.00.61.8
30540.00.30.30.0NA<LOQ80.01.12.7
3110.0NA<LOQ0.0NA<LOQ0.0NA<LOQ
3210.0NA<LOQ0.0NA<LOQ100.00.90.9
3310.0NA<LOQ0.0NA<LOQ100.00.70.7
  • a NA, not available.