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Common Use:
To assess for the presence of blood in the stool toward diagnosing gastrointestinal bleeding, cancer, inflammation, and infection.


Normal Findings:
(Method: Macroscopic examination, for appearance and color; microscopic examination, for cell count and presence of meat fibers; leukocyte esterase, for leukocytes; Bendict’s solution (copper sulfate) for reducing substances; guaiac, for occult blood; x-ray paper, for trypsin.)

CharacteristicNormal Result
AppearanceSolid and formed
Epithelial cellsFew to moderate
Fecal fatSee “Fecal Fat” study
Leukocytes (white blood cells)Negative
Meat fibersNegative
Occult bloodNegative
Reducing substancesNegative
Trypsin2+ to 4+

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