Methodology/Principle
Microscopic count of neutrophils in smear
stained with methylene blue, Gram stain, or Wright’s stain
Examination for neutrophils
Interpretation
Three per high- power field indicates condition affecting intestinal wall
Examination for neutrophils
Methodology/Principle
Microscopic examination of direct smear stained with Sudan III
Qualitative fecal fats
Interpretation
60 large orange-red droplets indicates condition affecting intestinal wall
Qualitative fecal fats
Methodology/Principle
Microscopic examination of smear heated with acetic acid and sudan III
Qualitative fecal fats
Interpretation
100 orange-red droplets measuring 6 to 75 um indicates
Qualitative fecal fats
Methodology/Principle
Pseudoperoxidase actovity of hemoglobin liberates oxygen from hydrogen peroxide to oxidize guaiac reagent
gOFBT
Interpretation
blue color indicates gastrointestinal bleeding
gFOBT
Methodology/Principle
Uses polyclonal anti human bodies specific for the globin portion of human hemoglobin
iFOBT
Interpretation
Positive test and control lines indicate GI bleeding
iFOBT
Addition of sodium hydroxide to hemoglobin containing emulsion determines presence of maternal or fetal blood
APT test
pink color indicates presence of fetal blood
APT test
emulsified specimen placed on xray paper determines ability to digest gelatin
Trypsin
inability to digest indicates lack of trypsin
trypsin
emulsified specimen placed on xray paper determines ability to digest gelatin
Trypsin
immunoassay using an ELISA Test
elastase 1
sensitive indicator of exocrine pancreatic insufficiency
elastase 1
addition of clinitest tablet to emulsified stool detects presence of reducing substances
clinitest
reaction of 0.5 g/dl reducing substances suggest carbohydrate intolerance
clinitest
