sedimentation rate

Sedimentation rate, often measured by the erythrocyte sedimentation rate (ESR), is a blood test that helps assess inflammation in the body. It measures how quickly red blood cells settle at the bottom of a test tube filled with blood. A higher sedimentation rate typically indicates the presence of inflammation or infection, as certain proteins in the blood can cause red blood cells to clump together and settle faster. While not specific to any disease, ESR can help doctors monitor conditions like arthritis, infections, and some cancers, guiding further diagnostic evaluations.