Dr. Karen Tobias
Shunt Management Team
For the UTmost Care
22 January 2008
Question: Is Bromosulfaphthalein (BSP) a more reliable test than a bile acid test?
Answer: There are not too many practices performing BSP anymore; and the BSP test is less sensitive than bile acids. Since our normals for bile acids are
set by our laboratory at <10 and <15 for fasting and fed bile acids, the variance in normal dogs in our lab is quite small. There are different
normals for different labs- perhaps that is what concerns people? Anyway,
if the values are over 10 and over 15 in our lab, the results are abnormal. As with any liver function test, all this tells us is that there is something going on with the liver- it doesn't tell us what.
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