We examined urinary concentrations of 6 BP derivatives in a Korean national survey.
The geometric concentration of BP-1 and 4-OH-BP were 1.24 and 0.31 ng/mL.
Urinary BP-1 and 4-OH-BP were associated with sex, age, income and current residence.
Urinary BP-3 and BP-1 showed strong correlation, 4-OH-BP correlated with BP-1 and BP-8.