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February 8, 2012

Sedimentation Rate
(Erythrocyte Sedimentation Rate or ESR)

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What is a sedimentation rate?

A sedimentation rate is common blood test that is used to detect and monitor inflammation in the body. The sedimentation rate is also called the erythrocyte sedimentation rate because it is a measure of the red blood cells (erythrocytes) sedimenting in a tube over a given period of time. Sedimentation rate is often abbreviated as sed rate or ESR.

How is a sedimentation rate performed?

A sedimentation rate is performed by measuring the rate at which red blood cells (RBCs) settle in a test tube. The RBCs become sediment in the bottom of the test tube over time, leaving the blood serum visible above. The classic sedimentation rate is simply how far the top of the RBC layer has fallen (in millimeters) in one hour. The sedimentation rate increases with more inflammation.

What is the normal sedimentation rate?

The normal sedimentation rate (Westergren method) for males is 0-15 millimeters per hour, females is 0-20 millimeters per hour. The sedimentation rate can be slightly more elevated in the elderly.


Last Editorial Review: 4/25/2008



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Sedimentation Rate

Relapsing polychondritis facts

  • Relapsing polychondritis is an uncommon, chronic disorder of the cartilage.
  • Relapsing polychondritis is characterized by recurrent episodes of painful inflammation.
  • Relapsing polychondritis can involve all types of cartilage.
  • Typical cartilage tissues affected include the ears, nose, and joints.
  • There is no one specific test for diagnosing relapsing polychondritis.
  • Treatment often involves cortisone-related medications.
  • The course of symptoms for patients is often unpredictable.

What is relapsing polychondritis?

Relapsing polychondritis is an uncommon, chronic disorder of the cartilage that is characterized by recurrent episodes of inflammation of the cartilage of various tissues of the body. Chondritis means inflammation of cartilage. Tissues containing cartilage that can become inflamed inclu...

Read the Relapsing Polychondritis article »







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