According to MedlinePlus, a normal ESR range depends on age and gender. Men under the age of 50 should have less than 15 millimeters per hour, whereas men over the age of 50 should have less than 20 millimeters per hour.
Women under 50 and women over 50 are considered to be in the normal range if they have less than 20 or 30 millimeters per hour, respectively, states MedlinePlus. Newborns have a normal range of 0 to 2 millimeters per hour, while infants through puberty age should score in between 3 and 13 millimeters per hour.
MedlinePlus explains that ESR is an abbreviation for erythrocyte sedimentation rate and is often referred to as a "sed rate." It provides an indirect measurement of the amount of inflammation present in the body.