Urinalysis Flashcards
In the glomerulus the visceral epithelium has a “shield of negativity” which helps to repel ____ from entering the Bowman’s space.
a. positive/cation proteins
b. negative/anion proteins
c. neutral proteins
d. RBCs
b. negative/anion proteins
In terms of specific gravity, a person with Diabetes Insipidus will have a ____ specific gravity than a person with Diabetes Mellitus due to ___ levels of ADH
a. lower, higher
b. higher, lower
c. lower, lower
d. higher, normal
c. lower, lower
A specific gravity reading of >1.050 refractometer and 1.015 by reagent strip of a urine sample is most likely due to
a. technologist (operator error)
b. poor methodology of a reagent strip method
c. the presence of sodium and chloride ions
d. radiographic dye or other high molecular weight molecules
d. radiographic dye or other high molecular weight molecules
A urine that develops a port wine color after standing may contains:
a. urochrome
b. urobilin
c. metehemoglobin
d. porphyrin
d. porphyrin
On a patient result, report, a routine physical examination of urine includes all of these EXCEPT:
a. color
b. odor
c. specific gravity
d. clarity
b. odor
A large amount of yellow foam in the urine may indicate the presence of
a. urea
b. bilirubin
c. lipids
d. proteins
b. bilirubin
An orange colored urine arrives from an outpatient clinic. There is no known medication or medical record history for the patient urine. In order to differentiate whether the orange color is due to bilirubin, Pyridium or an orange pigment, what should be done?
a. use refractometer to measure the specific gravity
b. shake the urine and look for the presence or absence of a yellow foam
c. perform a reagent strip test for bilirubin
d. perform a reagent strip test and an ictotest
d. perform a reagent strip test and an ictotest
Proper care of reagent strips includes all of the following EXCEPT:
a. checking the expiration date
b. storing in a clear container
c.preventing exposure to volatile chemicals
d. storing with a desiccant
b. storing in a clear container
Clinically significant urine turbidity may be due to the presence of:
a. amorphous crystals
b. squamous epithelial cells
c. white blood cells
d. radiographic contrast dye
c. white blood cells
A refractometer reads >1.050 for a urine specific gravity. The technologist makes a 1:2 dilution of the urine. The refractometer now reads 1.033. The final result should be reported as:
a . >1.050
b. 2.066
c. 1.033
d. 1.066
d. 1.066
The glucose renal threshold is 160-180 mg/dL. The renal threshold represents the:
a. the concentration level of glucose in the filtrate
b. the plasma concentration above which glucose is not reabsorbed and is excreted into the urine
c. the maximal rate of glucose reabsorption in the renal tubules
d. the plasma level at the start of glucose reabsorption in the nephron
b. the plasma concentration above which glucose is not reabsorbed and is excreted into the urine
What color would a urine specimen be if myoglobin (only) is present?
a. colorless and clear
b. colorless but cloudy
c. red and cloudy
d. red and clear
d. red and clear
The principle of the reagent strip is for protein is based on:
a. a double indicator reaction
b. the protein error of indicates
c. the diazo reaction
d. a peroxidase enzymatic reaction
b. the protein error of indicates
One way that angiotensin II corrects renal blood flow is through the release of ___ which in turn causes sodium ions to be retained
a. antidiuretic hormone (ADH)
b. renin
c. erythropoietin (EPO)
d. aldosterone
d. aldosterone
A urine sample that has sat unprotected from light will show a decrease in:
a. bacteria
b. bilirubin
c. glucose
d. pH
b. bilirubin
