Journal of Lipid Research, Vol 25, 750-753, Copyright © 1984 by Lipid Research, Inc.
Presence of monohydroxy bile acids in the urinary precipitates: a pitfall in the analysis of urinary bile acids
J Yanagisawa, H Ichimiya, M Nagai and F Nakayama
The importance of the method of handling the urinary precipitates
frequently present in urine samples, especially after freezing-thawing, for
bile acid analysis is emphasized because of the presence of a considerable
proportion of monohydroxy bile acids such as lithocholic and 3
beta-hydroxy-5-cholenoic acids. Filtration of the urinary precipitates may
lead to the underestimation of these important bile acid species.