week 1 quiz Flashcards
An unpreserved urine specimen was collected at 8am, and remained at room temperature until the afternoon line-up was done. You would expect to find:
b. increased bacteria and nitrite
A yellow foam is observed after shaking a greenish-amber urine indicates that the:
c. urine may contain bilirubin
Which of the following best aids in the differentiation of hemoglobiuria and hematuria?
d. microscopic examination
Which of the following blood cells will not be detected by the leukocyte esterase pad because it lacks esterase?
b. lymphocytes
Which of the following is a ketone body not detected by the reagent strip or tablet test?
d. b-hydroxybutyrate
Which of the following conditions most likely accounts for a negative nitrite result on the reagent strip despite the presence of bacteria?
d. all correct
Which of the following are characteristic urine findings from a patient with hemolytic jaundice?
c. negative test for bilirubin and an increased amount of urobilinogen
Which of the following reagent strip tests can be affected by ascorbic acid, resulting in falsely low or false-negative results?
d. all correct
When the laboratorian performs the microscopic examination of urine sediment, which of the following are enumerated using low-power magnification?
b. casts
A urine sediment could have which of the following formed elements and still be considered “normal”?
a. 2 or fewer hyaline casts
urinary casts are formed with a core matrix of
d. uromodulin
When the laboratorian is using brightfield microscopy, a urinary cast that appears homogenous with well-defined edges, blunt ends, and cracks is most likely a
d. waxy cast
What cell is most commonly associated with vaginal contamination?
c. squamous epithelial cells
can this be ran?
-A urine cup containing 10 mL of cloudy urine that was collected 3 hours ago at an OSF Urgo and was left at room temperature.
no. specimens can only be left at room temp for 2 hours
can this be ran?
-urine cup containing 30 mL of urine that was collected at OSf Urgo 20 hours ago and stored in the freezer
no. specimen cannot be frozen