Erythrocyte Sedimentation Rate (ESR) Test
The Erythrocyte Sedimentation Rate (ESR) Test measures how quickly red blood cells (erythrocytes) settle at the bottom of a test tube, indicating the presence of inflammation in the body. At Hindustan Laboratory, we provide accurate ESR testing to help diagnose and monitor inflammatory conditions.
What is an ESR Test?
The ESR test, also known as the sedimentation rate or sed rate test, is a non-specific blood test that measures the rate at which red blood cells settle in a tube over one hour. A higher-than-normal rate may indicate inflammation caused by infections, autoimmune diseases, or other conditions. The test is often used alongside other diagnostic tests to provide a comprehensive health assessment.
Purpose of the ESR Test
- Detect inflammation caused by infections, autoimmune disorders, or cancers.
- Diagnose conditions such as rheumatoid arthritis, systemic lupus erythematosus (SLE), or temporal arteritis.
- Monitor the progression of inflammatory diseases or response to treatment.
- Evaluate unexplained symptoms like fever, joint pain, or fatigue.
- Support diagnosis of conditions like polymyalgia rheumatica or inflammatory bowel disease.
ESR Reference Range
| Test |
Description |
Normal Range (Approx.) |
| Erythrocyte Sedimentation Rate (ESR) |
Measures the rate at which RBCs settle in a tube over one hour. |
Men: 0–15 mm/hr
Women: 0–20 mm/hr
Children: 0–10 mm/hr |
Note: Normal ranges may vary slightly depending on laboratory standards, age, gender, or conditions like pregnancy. Always consult your doctor for interpretation.
Preparation for the ESR Test
Minimal preparation is typically required for an ESR test. However, consider these guidelines:
- Inform your doctor about medications (e.g., corticosteroids, NSAIDs) or supplements, as they may affect ESR results.
- Notify Hindustan Laboratory of recent conditions like pregnancy, menstruation, or obesity, which can naturally elevate ESR.
- Fasting is usually not required, but follow any specific instructions provided by our team.
- Stay hydrated to ensure an easier blood draw.
Procedure
The ESR test is a simple and quick blood test:
- A healthcare professional cleans the site (usually your arm) with an antiseptic.
- A needle is inserted into a vein to collect a small blood sample.
- The sample is placed in a vertical tube, and the rate at which red blood cells settle is measured over one hour in our advanced laboratory.
- The procedure takes less than 5 minutes for the blood draw, with minimal discomfort.
Interpreting ESR Test Results
Your ESR results are compared to standard reference ranges. Abnormal results may indicate:
- High ESR:
- Causes: Infections (e.g., tuberculosis), autoimmune diseases (e.g., rheumatoid arthritis, lupus), inflammatory conditions (e.g., temporal arteritis), cancers (e.g., lymphoma), or pregnancy.
- Symptoms: Fever, joint pain, fatigue, or swelling, depending on the underlying condition.
- Low ESR:
- Causes: Low fibrinogen levels, sickle cell anemia, or polycythemia. Low ESR is usually not clinically significant.
- Symptoms: Typically none, but depends on the underlying condition.
Since ESR is non-specific, a high or low result requires further testing to identify the underlying cause. Always consult your doctor for a detailed interpretation, considering your medical history, symptoms, and other test results (e.g., C-reactive protein, CBC).
Why Choose Hindustan Laboratory for ESR Testing?
- Advanced laboratory techniques for precise ESR measurements.
- Experienced professionals ensuring reliable and timely results.
- Comfortable, hygienic, and patient-friendly testing environment.
- Fast result delivery to support prompt diagnosis and treatment.