The flu is a respiratory illness triggered by infection with an influenza virus. Our guide explains the types of flu tests and when and how they may be used.
Potassium is an electrolyte, a type of mineral that is essential to your health. Find out about the types of potassium tests and when and how they are used.
Triglycerides are a form of fat and a major source of energy for the body. A triglycerides test is used as part of a lipid profile to predict your risk of developing heart disease and to help make decisions about what treatment may be needed if you are at high risk.