| The Erythrocyte Sedimentation Rate (ESR) test is a simple blood test that measures how quickly red blood cells settle at the bottom of a tube. It is a non-specific test that helps doctors identify inflammation in the body. When there is inflammation in the body, certain proteins called fibrinogen and globulins increase in the blood. These proteins cause red blood cells to stick together and settle faster. The ESR test measures the rate at which these red blood cells settle, which can indicate the presence and severity of inflammation. The test is commonly used to help diagnose and monitor conditions like infections, autoimmune diseases (such as rheumatoid arthritis and lupus), and certain types of cancer. It can also be helpful in assessing the effectiveness of treatment for these conditions. During the test, a small sample of blood is taken and placed in a tube. The tube is then left undisturbed for a specific amount of time, usually one hour. The distance that the red blood cells have settled is measured and reported as the ESR value. It is important to note that the ESR test alone cannot diagnose a specific condition, but it provides valuable information that helps doctors make informed decisions about further testing and treatment options. |