Erythrocyte Sedimentation Rate (ESR), or Sed rate, is a test to reveal inflammatory activity in the body, the test helps your doctor diagnose or monitor the progress of an inflammatory disease that can be caused by one or more conditions such as infections, tumors or autoimmune diseases.
A blood sample from arm vein.
For adults (Westergren method):
- Men under 50 years old: less than 15 mm/hr
- Men over 50 years old: less than 20 mm/hr
- Women under 50 years old: less than 20 mm/hr
- Women over 50 years old: less than 30 mm/hr
For children (Westergren method):
- Newborn: 0 to 2 mm/hr
- Newborn to puberty: 3 to 13 mm/hr
Normal value ranges may vary slightly among different laboratories.
Since ESR is a non-specific marker of inflammation and is affected by other factors, the results must be used along with other clinical findings, the individual’s health history, and results from other laboratory tests. If the ESR and clinical findings match, the health practitioner may be able to confirm or rule out a suspected diagnosis.