Sed Rate is a blood test where the blood is put into a machine that goes around very fast using centrifucal force to drive the red blood cells to the bottom of the tube. The concentration of red blood cells after one hour is the SED rate. SED rate is one test to measure inflammation in the body. When there is a rise in inflammation, the liver produces proteins that stick to red blood cells making them go to the bottom faster making the SED rate go higher. Many causes in the body can cause the SED rate to rise. Medications such as asprin, antibiotics, pain meds, quinine, anti-convulsants,etc. can cause the SED rate to rise. This test is not a conclusive test for inflammation in the body. A C-Reactive Protein (CRP) test should be given along with the SED rate to diagnose inflammation in the body. Even if inflammation is indicated, other tests would be required to determine where the inflammation is and what is causing it before treatment can be determined. Normal for a man is 0-15/hr. Normal for a woman is 0-20/hr.
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