PARA LAB LA2 Flashcards
a test to measure for acidity of stool to help in the diagnosis of a certain medical condition
Test for pH- nitrazine paper test
Normal pH of feces
6.6
low pH below 6.0 may be a result of _______________
diarrhea
a slightly alkaline pH is observed in patients with________________
low-fiber diet
what is the test for mucus
Hecht method
test for occult blood
fecal occult blood test (FOBT)
test for bile pigment
Gmelins test
test to determine whether the blood is grossly bloody vomitus or feces of the neonate represents swallowed maternal blood during delivery or during breastfeeding
APT test or Apt-downey
test for ability to digest gelatin
TRYPSIN
test for presence of reducing substances
CLINITEST
large amounts of mucus in stool may indicate _______________
diarrhea
is an indication of gastrointestinal tract bleeding
occult blood
this test is helpful as a mass screening procedure for colorectal cancer
FOBT
color for positive in FOBT
blue
what can cause false positive in FOBT
eating peroxidase containing food and intake of drugs like aspirin or other anti inflammatory drugs
what can case false negative in FOBT
intake if large amounts of vitamin C and conversion to acid hematin
positive reaction for gmelins test
play of colors (order: out to in): green, blue, violet, red, yellow (GBVRY)
absence of green in gmelins test indicate?
excludes the presence of bile pigment
normally around __ grams per day of fat is excreted in the feces
7g
excess fat excreted in the feces is called
steatorrhea
is caused by the deficiency of pancreatic lipase and bile salts
steatorrhea
neonatal blood contains a high proportion of ________________ which is resistant to alkali denaturation
fetal hemoglobin
in apt test in the presence of fetal hemoglobin the solution __________________
remains pink
in apt test in the presence of maternal hemoglobin the solution _____________________________
becomes yellow brown after 2 mins
hecht reagent is prepared by mixing ______________ and _________________
2% brilliant green and 1% neutral red
to prevent false positive in gmelins test, diet should be free from peroxidase-containing foods for at least ________ prior to testing
3 days
oxidized bile pigments by acids
biliverdin (green)
bilicyanin (blue)
choletelin (yellow)
the reagent used for pH test
Nitrazine Paper
the reagent used for test for Mucus
Hecht Reagent (2% Brilliant green & 1% neutral red)
the reagents for the test for occult blood
3% hydrogen peroxide, Benzidine solution
the reagent used for test for bile pigment
Barium chloride
the reagent used for test for Malabsorption of Fat
Stain Oil red O
Presence of _____________ indicates steatorrhea
greater than or equal to 60 fat droplets
the reagent used for test for APT test
1% Sodium Hydroxide
