A normal ESR level is less than 15 millimeters per hour in men under the age of 50 and less than 20 millimeters per hour in women under the age of 50, states MedlinePlus. A normal C-reactive protein level is less than 1.0 milligram per deciliter, reports WebMD.
Erythrocyte sedimentation rate, or ESR, indirectly measures the level of inflammation in the body, states MedlinePlus. In adults over the age of 50, a normal ESR is less than 20 millimeters per hour in men and less than 30 millimeters per hour in women. In newborns, a normal ESR level ranges from 0 to 2 millimeters per hour, while a range of 3 to 13 millimeters per hour is normal for children until they reach puberty. The C-reactive protein test also measures the level of inflammation in the body, reports WebMD.