Well the vast majority is conjugated, but there is a small amount of unconjugated bilirubin in bile, only about 1-2% of total bilirubin, which is only 1% of bile.

其实胆汁中绝大部分是结合胆红素，但仍有少量的非结合胆红素，仅占总胆红素的1-2%，占胆汁的1%。