Interpretation The risk of stillbirth is increased in women with intrahepatic cholestasis of pregnancy and singletonpregnancies when serum bile acids concentrations are of 100 µmol/L or more. Because most women with intrahepaticcholestasis of pregnancy have bile acids below this concentration, they can probably be reassured that the risk ofstillbirth is similar to that of pregnant women in the general population, provided repeat bile acid testing is done untildelivery