The Erythrocyte Sedimentation Rate (ESR) or Sed Rate test is used to measure inflammation in the body. The test measures the rate at which red blood cells settle in a sample. If the cells settle faster, it indicates a higher level of specific proteins which are present in the blood when there is inflammation in the body. Inflammation is part of the body's response to injury or infection. The Sed Rate test can help determine if inflammation is present but not where or what the cause is. When used in conjunction with other test results, the Sed Rate test can aid in the diagnosis of various infections, cancers and autoimmune disorders.
This test is typically ordered when someone is suspected of having a condition which is causing inflammation or to monitor treatment for various conditions which cause inflammation. The ESR Test is typically ordered with other tests such as a C-Reactive Protein (CRP).
Turnaround time for the ESR test is typically 1 business day.
Note: Result turn around times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
The ESR test has no fasting requirements.
Specimens for this test need to arrive at the lab within 24 hrs. Specimens drawn at Dynacare, a 3rd party lab which works with Labcorp, or other 3rd party draw sites may not be able to reach the lab in time for testing to be performed.
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