 Thus, the presence of pale stool (stercobilin absent from feces) and dark urine (conjugated bilirubin present in urine) suggest an obstructive cause of jaundice.Because these associated signs are also positive in many hepatic jaundice conditions, they cannot be a reliable clinical feature to distinguish obstruction versus hepatocellular jaundice causes.Most people presenting with jaundice will have various predictable patterns of liver panel abnormalities, though significant variation does exist.