Liver Function Test
Test for enzymes that reflect cholestasis:
ALP:
< 3 fold increase: not specific for cholestasis (seen
in almost any type of liver disease)
>4 fold increase: cholestatic liver disorder,
infilterative liver disease (Cancer), bone conditions
with rapid turnover of bone (Pagets disease)
ALP is NOT useful to distinguish b/w intra and
extra hepatic obstruction