what is esr test
the erythrocyte sedimentation rate esr or sedimentation rate sed rate is a measure of the settling of red blood cells in a tube of blood during one hour the rate is an indication of inflammation and increases in many diseaseshe erythrocyte sedimentation rate esr or sedimentation rate sed rate is a measure of the settling of red blood cells in a tube of blood during one hour the rate is an indication of inflammation and increases in many diseases