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Urinalysis And Body Fluids

which statement regarding renal function is true? :~~ glomeruli are far more permeable to water and salt than other capillaries which statement regarding normal salt and water handling by the nephron is correct? :~~ the ascending limb of the tubule is highly permeable to salt but not water wh...

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Urinalysis and body fluids Questions and Correct Answers | Latest Update

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2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!

urinalysis and body fluids Questions
and Correct Answers | Latest
Update
which statement regarding renal function is true?
✓ :~~ glomeruli are far more permeable to water and salt than other capillaries

which statement regarding normal salt and water handling by the nephron is correct?
✓ :~~ the ascending limb of the tubule is highly permeable to salt but not water

which statement concerning renal tubular function is true?
✓ :~~ in salt deprivation, the kidneys will conserve sodium at the expense of
patassium

which of the following is innappropriate when collecting urine for routine bacteriologic
culture?
✓ :~~ the sample may be held at 2-8C for up to 48 hours prior to plating

which statement about sample collection for routine urinalysis is true?
✓ :~~ samples may be stored at room temp for up to 2 hours

which urine color is correlated correctly with the pigment producing substance?
✓ :~~ deep yellow urine and yellow foam with bilirubin

which of the following substances will cause urine to produce red fluorescence when
examined with an ultraviolet lamp (360 nm)?
✓ :~~ coproporphyrin

which of the following conditions is associated with normal urine color but produces red
fluorescence when urine is examined with an UV (woods) lamp?
✓ :~~ lead poisoning

which statement regarding porphyria is accurate?
✓ :~~ serum, urine, and fecal tests may be needed for diagnosis

1|P a g e | G r a d eA + | 2 0 2 0 2 5

,2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!

which is the most common form of porphyria?
✓ :~~ porphyria cutanea tarda

which of the following methods is the least sensitive and specific for measuring PBG in
urine?
✓ :~~ watson-schwartz test

a brown or black pigment in urine can be caused by:
✓ :~~ melanin

urine that is dark red or port wine in color may be caused by:
✓ :~~ porphyria cutanea tarda

which of the following tests is affected least by standing or improperly stored urine?
✓ :~~ protein

which type of urine sample is needed for a d-xylose absorption test on an adult patient?
✓ :~~ 5 hour timed urine kept under refrigeration

which of the following is inappropriate when collecting a 24 hour urine sample for
catecholamines?
✓ :~~ ten mL of 1N sodium hydroxide should be added to the container before
collection

urine production of less than 400 a day is:
✓ :~~ defined as oliguria

which of the following contributes to SG, but not to osmolality?
✓ :~~ protein

urine with an SGconsistently between 1.0022 and 1.003 indicates:
✓ :~~ diabetes

in which of the following conditions is the urine SG likely to be below 1.025?
✓ :~~ chronic renal failure

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, 2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!

which statement regarding methods for measuring SG is true?
✓ :~~ to correct a urinometer, subtract .001 per each 3C below 15.5C

what is the principle of the colorimetric reagent strip determination of SG in urine?
✓ :~~ ionic strength alters the pKa of a polyelectrolyte

which statement regarding urine pH is true?
✓ :~~ contamination should be suspected if urine pH is less than 4.5

in renal tubular acidosis, the pH of urine is:
✓ :~~ consistently alkaline

the normal daily urine output for an adult is approximately:
✓ :~~ .6-1.6 L

the SG of the filtrate in bowmans space is approximately:
✓ :~~ 1.008-1.010

a patient with partially compensated respiratory alkalosis would have a urine pH of:
✓ :~~ 7.5-8.5

which of the following is most likely to cause a false positive dry reagent strip test for
urinary protein?
✓ :~~ highly buffered alkaline urine

when testing for urinary protein with sulfosalicylic acid (SSA), which condition may produce
a false positive result?
✓ :~~ the presence of xray contrast media

a discrepancy between the urine SG determined by measuring refractive index and urine
osmolality would be most likely to occur:
✓ :~~ after an intravenous pyelogram (IVP)

which of the following is likely to result in a false negative dry reagent strip test for
proteinuria?
✓ :~~ bence jones protein

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