ESR (Erythrocyte Sedimentation Rate) measures how quickly red blood cells settle in a tube. When there is inflammation, proteins in the blood make the cells settle faster.
- Normal range (adults)
- Men Up to 15 mm/hr · Women Up to 20 mm/hr
- Sample
- Blood
- Fasting
- Not usually needed
- Also called
- Erythrocyte Sedimentation Rate, E.S.R, Sedimentation Rate, Sed Rate, Westergren, ESR Westergren
ESR normal range
| Group | mm/hrSame unit in all countries |
|---|---|
| Men | Up to 15 |
| Women | Up to 20 |
ESR naturally rises with age and in pregnancy.
Ranges vary slightly between laboratories. The range printed on your own report is the one to go by.
Why is the ESR test done?
It is a general screening test for inflammation and is used to monitor conditions such as rheumatoid arthritis, tuberculosis and some infections.
What does a high ESR level mean?
A high ESR means there is inflammation somewhere in the body, but it does not show where or why. It naturally rises with age, in women and in pregnancy.
Common causes
- Infections, including tuberculosis
- Rheumatoid arthritis, lupus and other autoimmune diseases
- Anemia
- Kidney disease
- Pregnancy and older age
- Rarely, cancers such as myeloma
Diet and lifestyle tips
- Anti-inflammatory eating: vegetables, fruit, whole grains, oily fish, olive oil, nuts
- Limit sugar, refined flour and fried foods
- Keep a healthy weight and stay active
When should you see a doctor?
Your doctor will interpret a high ESR with your symptoms and other tests such as CRP. Very high values (over 100 mm/hr) always need investigation.
Last updated
This page is for general education and is not a diagnosis. Normal ranges differ between laboratories, so always compare your result with the reference range printed on your own report, and discuss abnormal results with your doctor.