Lipoproteins are complex particles composed of lipids and proteins that serve as transport vehicles for lipids in the blood, playing a crucial role in lipid metabolism and cardiovascular health. They are classified based on their density into categories such as HDL, LDL, and VLDL, each with distinct roles and implications for disease risk.
A fasting blood test is a diagnostic tool used to measure certain substances in the blood after a period of not eating or drinking, typically for 8-12 hours, to ensure accurate baseline levels. It is commonly used to assess blood glucose, cholesterol, and triglyceride levels, aiding in the diagnosis and management of conditions like diabetes and hyperlipidemia.