My blood sitosterol is high at 180-210 compared to okay below 30. First time I have seen this assay and I don't know to be concerned or not. I have been diagnosed as cholesterol absorbing compared to cholesterol making and started Zetia. I also 10 years ago been diagnosed as HHC hemochromatosis but ferritin blood levels are now under control via phlebotomies. My grandfather died of a stroke. Where should I start?