Interpret Your Erythrocyte Sedimentation Rate Results
Enter your ESR value below and get an instant, free AI interpretation — a plain-English explanation checked against WHO/IFCC reference ranges.
Medical Disclaimer
This AI-generated interpretation is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Results may vary based on individual health factors not captured here.
Always consult a qualified healthcare professional before making any health decisions. Read full disclaimer →
Erythrocyte Sedimentation Rate Normal Ranges
ESR measures how quickly red blood cells settle to the bottom of a test tube over one hour.
| Age Group | Sex | Reference Range | Unit | Notes |
|---|---|---|---|---|
| Adults (18–64) | Male | 0 – 15 | mm/hr | Westergren method; rises with age |
| Adults (18–64) | Female | 0 – 20 | mm/hr | — |
| Elderly (65+) | Male | 0 – 20 | mm/hr | Age >50 |
| Elderly (65+) | Female | 0 – 30 | mm/hr | Age >50 |
Why Doctors Order the Erythrocyte Sedimentation Rate Test
ESR is most useful for diagnosing and monitoring giant cell arteritis (temporal arteritis), polymyalgia rheumatica, and multiple myeloma — all of which cause dramatically elevated ESR. It is also used alongside CRP to monitor treatment response in rheumatoid arthritis and inflammatory bowel disease.
How to Enter Your ESR Result
Enter your ESR value in mm/hr, exactly as shown on your lab report.
Reference ranges for ESR differ by age and between men and women, so entering your age and sex gives a more accurate reading.
What a Low or High ESR Can Be Associated With
Below the reference range
- Polycythemia vera (too many cells, slower settling)
- Sickle cell disease (abnormal cell shape)
- Technical error (sample too old or tube tilted)
Above the reference range
- Bacterial infections (septicemia, TB, osteomyelitis)
- Autoimmune diseases (rheumatoid arthritis, lupus, vasculitis)
- Giant cell arteritis (often >100 mm/hr)
- Multiple myeloma and other paraproteinemias
- Malignancy
These are common associations, not a diagnosis. A single result is read alongside your symptoms, history and other tests — discuss it with your doctor.
What Can Change Your ESR Result
Before you read too much into a result, consider whether any of these applied:
- Anemia (falsely raises ESR)
- Polycythemia (falsely lowers ESR)
- Pregnancy (physiologically elevated)
- Age (ESR rises normally with age)
Preparing for the test: Blood should be tested within 2 hours of collection or refrigerated. No fasting required.
Symptoms That Often Prompt ESR Testing
- Depends on underlying condition
- Fatigue
- Joint pain and stiffness
- Headache and scalp tenderness (giant cell arteritis)
- Fever
Want the full clinical guide to Erythrocyte Sedimentation Rate?
Reference ranges, causes, symptoms, preparation, and FAQs.