The lactate dehydrogenase (LDH) of 530 is high, I would discuss this with your physician.
Your LDH cholesterol level was 530? Yes, that is very high. Are they starting you on a statin medication to lower it? That would be wise. Talk to your doctor. Here is a helpful guide for lowering your LDL cholesterol through lifestyle to compliment medication you may be prescribed. https://www.nhlbi.nih.gov/files/docs/public/heart/chol_tlc.pdf. Make sure to exercise if you are allowed on a regular basis as that raises HDL which brings down your bad cholesterol numbers.
Let us know what the doctor suggests for you. Hang in there.