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. 2019 Jul;47(7):743–752. doi: 10.1124/dmd.119.086470

TABLE 4.

Fractional metabolism (fm) estimated using the P450 and UGT kinetic models

The fm values were calculated using CLint values (see Table 3). Data shown are parameter estimates and CV% of the estimates.

Enzyme THC 11-OH-THC 11-OH-THC
Depletion Formation Depletion
CYP2C9 0.91 (0.4%) 1.00 (fixed) 0.15 (3.6%)
CYP3A 0.00 (fixed) 0.00 (fixed) 0.18 (3.0%)
CYP2D6 0.09 (4.4%) 0.00 (fixed) 0.00 (fixed)
UGTs 0.00 (fixed) 0.00 (fixed) 0.67 (12%)