Larry,
When I was practicing general internal medicine I always told my patients not to have their lipid laboratory studies done until they had gone at least three days without beer, wine, booze or alcohol. It's amazing how high I can make my TG level go with a couple beers the night before.
You should also avoid all fried and fatty foods for a couple days before the test and, of course, take nothing the morning before the blood is drawn.
Most bad cholesterol in the blood is made by your own body, diet removes some of the building blocks for cholesterol. Many of the medications you take interfere with the liver and its cholesterol mechanisms. If you can control cholesterol with diet and attaining normal body mass, it's safer than medications.
For Triglycerides, the body makes some in the liver too, but some come from the diet. Your body absorbs the fats from your gut and they go primarily to your liver to begin digestion. Anything that hampers that digestion (including alcohol) can cause the VLDL levels and TG levels to remain elevated.
The reason for removing dietary fats and alcohol is because that is how the "normal" values for humans were determined years ago. If you don't follow the same regimen, you artificially place yourself at a disadvantage when the test is done. You may not require many of the medications if you put yourself on a level plane with the lab.
Dr. Lenny