Test guide

White Blood Cell (WBC) in Stool

This test looks for white blood cells in a sample of your stool (poop). White blood cells are also called leukocytes, so this test is sometimes called a leukocytes in stool test.

For everyone & professionalsReviewed 2026-10-18

What it is for

A health care provider may use a white blood cell in stool test to find out whether diarrhea is caused by conditions that involve inflammation in the digestive system. Some of the most common causes include: Many bacterial infections can cause inflammation in the digestive system. These include: Source: MedlinePlus, National Library of Medicine. Medical test information is public domain. Source identity and definition checked automatically on 2026-10-18. No individual clinical interpretation or human reviewer is asserted.

Limitations

Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.

Also known as

  • leukocytes in stool, stool WBC, fecal WBC, fecal leukocyte test, FLT, FGST, fecal leukocyte gram stain screen

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