Gastroenterology Book


Stool Leukocytes

Aka: Stool Leukocytes, Fecal Leukocytes
  1. Indications
    1. Acute Diarrhea
  2. Technique
    1. Add 1 drop saline to stool
    2. Stains
      1. Wright stain
      2. Methylene blue stains viable cell's nuclei
  3. Interpretation
    1. Numerous Fecal Leukocytes (suggests invasive inflammatory Bacterial Diarrhea)
      1. Shigella
      2. Campylobacter jejuni
      3. Escherichia coli
        1. Enteroinvasive E. coli (EIEC)
        2. Enterohemorrhagic E. coli (EHEC) or E. coli 0157:H7
    2. Variable Fecal Leukocytes
      1. Salmonella typhimurium (non-typhoid)
      2. Yersinia enterocolitica
      3. Vibrio parahaemolyticus
      4. Clostridium difficile
      5. Mycobacterium tuberculosis
      6. Aeromonas
      7. Plesiomonas shigelloides (Aeromonas shigelloides)
    3. Absent Fecal Leukocytes absent
      1. Salmonella
      2. Yersinia
      3. Aeromonas
      4. Escherichia coli
        1. Enterotoxigenic E. coli (ETEC)
        2. Enteroadherent E. coli (EAEC)
      5. Clostridium Dificile
  4. Efficacy: For identifying a Bacterial Diarrhea
    1. Similar efficacy to occult blood stool test as a marker of Bacterial Diarrhea
    2. Test Sensitivity: 50-80%
    3. Test Specificity: 83%

Leukocyte assessment, fecal, qualitative or semiquantitative (C1144719)

Concepts Laboratory Procedure (T059)
CPT 89055
English LEUKOCYTE ASSESSMENT FECAL, Leukocyte assessment fecal, LEUKOCYTE ASSMT FECAL QUAL/SEMIQUANTITATIVE, Leukocyte assessment, fecal, qualitative or semiquantitative
Derived from the NIH UMLS (Unified Medical Language System)

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