The Erythrocyte Sedimation Rate (ESR) is a test that relates to the ability
of red cells to form rouleaux, which is in turn related to levels of acute phase
proteins, fibrinogen and immunoglobulin.
The test for ESR measures the distance that red cells have fallen after one
hour in a vertical column of anticoagulated blood under the influence of gravity.
ESR is a useful indication of the presence and intensity of an inflammatory
process. It is not diagnostic of a particular disease. It rises with age and
Calculation of predicted value:
- men - ESR given by age in years divided by 2
- women - ESR given by age in (years+10) divided by 2
- Miller, A, BMJ (1983) i 266