ESR (Erythrocyte Sedimentation Rate)

The ESR test measures how quickly red blood cells settle in a test tube over an hour. A faster rate may indicate inflammation or infection.

It helps diagnose conditions like infections, autoimmune diseases, and chronic inflammatory disorders such as rheumatoid arthritis and lupus.

A small blood sample is taken from a vein and placed in a tube to measure the sedimentation rate.

A high ESR may indicate inflammation, infection, or chronic disease, while a low ESR is less common and may be due to conditions like sickle cell anemia.

Additional tests and clinical evaluation are needed to pinpoint the underlying cause. Treatment depends on the diagnosis.