Clinical Microscopy Flashcards
volume required for YELLOW IRIS instrument
2 mL
principle used by automated strip readers
Reflectance photometry/colorimetry?
device used for Centrifuge calibration
Tachometer
stopwatch
Strobe light
calibration of centrifuge is done every ____
3 months
disinfection of centrifuge is performed
weekly
refers to time from ordering a test through analysis in the lab to the charting of report
Turnaround time
PDMAI stands for
Plan Design Measure Assess Improve
what to do with a received body fluid collected in a SYRINGE which is > 1 hour from collection and with a volume > 1mL
reject
small body fluid specimens (few drops) in a SYRINGE received > 10 mins after collection
Reject
normal stool pH
7.0 to 8.0
pancreatic enzyme that breaks down gelatin
Trypsin
yellow-brown supernatant in APT test
maternal blood
pink solution in the APT test indicates presence of
Fetal blood
reagent used in APT test
1% sodium hydroxide
vitamin contraindicated in FOBT
Vitamin C
why is Guiac reagent preferred in FOBT?
Less sensitive (avoid false neg)
positive guiac test
Blue color
FOBT is for screening
Colorectal cancer
reagents used in Neutral fat stain
95% ethanol & Sudan III
reagents used in Split fat stain
36% acetic acid & Sudan III
Excessive fat excretion in stool
Steatorrhea
seen in patient with allergic reactions
Charcot-Leyden crystal
how many neutrophils are indicative of an invasive diarrhea
3 neutrophils per HPF
Lactoferrin latex agglutination is used to detect____
Fecal leukocytes
undigested muscle fibers in the feces appear
has 2 dimensional striations
specimen for quantitative fecal fat determination
3 day (72 hour) stool
Scybalous (goat droppings)
Constipation
Pea soup
typhoid
rice watery
cholera
ribbon-like
intestinal constriction
mucus, blood-streaked mucus
colitis
dysentery
malignancy
constipation
butter-like
cystic fibrosis (inc. mucus)
bulky/frothy
pancreatic disorders
bile duct obstruction
steatorrhea
violet/purple
porphyria
grape soda
blue
barium sulfate
gray stool
pale yellow, white, gray
bile duct obstruction
hematochezia, beets, food coloring rifampin
red stool
melena, ferrous sulfate, carcoal,
black stool
bismuth
black stool
brown color of stool is due to
urobilin/stercobilin pigments