The ESR test measures how quickly red blood cells settle at the bottom of a test tube. A faster rate may indicate inflammation. It is not diagnostic on its own but helps monitor or support diagnosis of conditions such as autoimmune disorders, infections, and certain cancers.
Preparation Guidelines of Sed Rate (ESR Test ? Erythrocyte Sedimentation Rate)
- No special preparation is required.
- Inform your provider about medications that may affect results, such as steroids or NSAIDs.
What to Expect
A small blood sample is taken from a vein in your arm. The lab measures how far red blood cells fall in one hour. The test itself only takes a few minutes.
Risks and Complications of Sed Rate (ESR Test ? Erythrocyte Sedimentation Rate)
- Minor bruising or soreness at the blood draw site.
- Very rare infection.
Results and Follow-Up of Sed Rate (ESR Test ? Erythrocyte Sedimentation Rate)
Results are usually available within a day. An elevated ESR suggests inflammation but does not identify the cause. Your doctor may order additional tests for a specific diagnosis.