Unlike many other blood tests, fasting typically isn’t necessary before an ESR test. However, certain medications can affect results, so inform your provider about all medications you take ...

An ESR (erythrocyte sedimentation rate test) is a blood test that helps detect inflammation. Learn what the results mean.

Another name for this test is erythrocyte sedimentation rate (ESR). Red blood cells are called erythrocytes. Sedimentation is the process by which they fall to the bottom of the tube.

Blood tests, such as complete blood count (CBC), antinuclear antibody (ANA), erythrocyte sedimentation rate (ESR), and others can help doctors diagnose lupus. Learn more.