it is possible that what you ate the night before your blood test could influence your test somewhat (probably not significantly). if you think this is the case you can repeat your test eating like you normally would. but another factor is your blood sugar control. if you blood sugars have been higher lately that could also cause your cholesterol to increase. you can tell this by checking your hemoglobin a1c. a registered dietitian can help sort this all out. you find one in your area at eatright. org or going through your doctor. see also foods that help lower cholesterol. good luck!
can diabetes or my metformin cause high cholesterol? i was taking prevastatin but my cholesterol is very high. i also had a big steak dinner the night before the test could that make a difference? it confuses me because i eat oatmeal once or twice a day which is supposed to help lower cholesterol plus i am on pravastatin. my doctor just switched me back to simvastatin but i am very concerned. i have a peanut butter sandwich and a half with my breakfast each morning would that make my cholesterol skyrocket?