Erythrocyte Sedimentation Rate

This is a blood test in which the red blood cells are measured on how long it takes for the cells to settle in a saline or plasma solution over a specified amount of time. In the case of an inflammation or infection in the body, the red blood cells become heavier and will settle more rapidly. This test is used to evaluate and manage rheumatoid arthritis, as well as other inflammatory conditions.


Some medications may need to be held in the case that they may affect test results. Your caregiver will let you know if this is necessary.


Westergren method

Male: up to 15 mm/hr

Female: up to 20 mm/hr

Child: up to 10 mm/hr

Newborn: 0-2 mm/hr

The ESR results depend on which test the lab uses.

Ranges for normal findings may vary among different laboratories and hospitals. You should always check with your doctor after having lab work or other tests done to discuss the meaning of your test results and whether your values are considered within normal limits.


Your caregiver will go over the test results with you and discuss the importance and meaning of your results, as well as treatment options and the need for additional tests if necessary.


It is your responsibility to obtain your test results. Ask the lab or department performing the test when and how you will get your results.