What Is a SEG Blood Test?

By Staff WriterLast Updated Mar 31, 2020 10:37:23 AM ET
Universal Images Group Editorial/Universal Images Group/Getty Images

RnCeus explains that "SEG" refers to mature neutrophils, a type of white blood cell. A blood test that measures SEG is usually trying to determine if the number of neutrophils has increased, a result that suggests the presence of a bacterial infection or an inflammatory process.