Definition of Rate, erythrocyte sedimentation

Rate, erythrocyte sedimentation: A sedimentation rate, or "sed rate", is a blood test that detects and is used to monitor inflammation activity. It is measured by recording the rate at which red blood cells (RBCs) sediment in a tube over time. It increases (the RBCs sediment faster) with more inflammation.


Last Editorial Review: 6/14/2012

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