Erythrocyte sedimentation rate | 合法醫療器材資訊網

Normalvalues—Westergren'soriginalnormalvalues(men3mm/handwomen7...ValuesoftheESRalsoappeartobeslightlyhigherinnormal ...

Physiological quantity

The erythrocyte sedimentation rate (ESR or sed rate) is the rate at which red blood cells in anticoagulated whole blood descend in a standardized tube over a period of one hour. It is a common hematology test, and is a non-specific measure of inflammation. To perform the test, anticoagulated blood is traditionally placed in an upright tube, known as a Westergren tube, and the distance which the red blood cells fall is measured and reported in millimetres at the end of one hour.[3]

Since the introduction of automated analyzers into the clinical laboratory, the ESR test has been automatically performed.

The ESR is influenced by the aggregation of red blood cells: blood plasma proteins, mainly fibrinogen, promote the formation of red cell clusters called rouleaux or larger structures (interconnected rouleaux, irregular clusters). As according to Stok...