Decode your ESR test results with our normal range chart. Learn what high & low ESR means, causes, symptoms & when to worry. Doctor-reviewed 2025.
Sed rate, or erythrocyte sedimentation rate (ESR), is a blood test that can show inflammatory activity in the body. Many health problems can cause a sed rate test result to be outside the standard range.
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High ESR may signal inflammation from infection or disease; low ESR is rarer and may suggest blood or heart conditions. Further tests are needed.
The sed rate (erythrocyte sedimentation rate or ESR) test is a type of blood test. It helps healthcare providers check for inflammation inside your body. They might use it to help diagnose a condition or infection, or to monitor you for changes after starting a new treatment.
An ESR (erythrocyte sedimentation rate test) is a blood test that helps detect inflammation. Learn what the results mean.
Erythrocytes are red blood cells. The sedimentation rate is the time it takes for your red blood cells to settle at the bottom of a test tube. An erythrocyte sedimentation rate (ESR) is a blood test that can show if you have inflammation in your body.