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MedLabUSA :: Miscellaneous Labs :: Erythrocyte Sedimentation Rate (ESR - Westergren)
| Erythrocyte Sedimentation Rate (ESR - Westergren) #16477 |
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SED Rate Test
A sedimentation rate, or SED rate, test is a 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.
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 sedimentation rate is simply how far the top of the RBC layer has fallen in one hour. The sedimentation rate increases with more inflammation.
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.
This test measures nonspecific inflammation, and can be elevated in certain conditions such as autoimmune diseases, infections, or different types of cancer.
MedLabUSA also offers a CBC blood test and other blood testing.
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