Urinalysis Practice Questions Flashcards
Urinalysis questions that could be useful on the exam!
A patient with uncontrolled diabetes mellitus will most likely have?
A pale urine with a high specific gravity
While performing an analysis of a baby’s urine, the tech notices the specimen has a “mousy” odor. Of the following substances that may be excreted in urine, the one that most characteristically produces this odor is?
Phenylpyruvic acid
An ammonia-like odor is characteristically associated with urine from patients who:
Have an infection with Proteus spp.
Urine that develops a port wine color after standing may contain:
Porphyrin
Acid urine that contains hemoglobin will darken on standing due to the formation of?
Methemoglobin
Urine from a 50 year old man was noted to turn dark red on standing. This change is caused by the presence of ?
Porphyrins = red
The clarity of a urine sample should be determined:
Following thorough mixing of the specimen
Milky urine from a 24 year old woman would most likely contain?
Many white blood cells
A brown-black urine would most likely contain?
Melanin
The yellow color of urine is primarily due to:
Urochrome pigment
Red urine may be due to:
Myoglobin
A urine specimen collected on an apparently healthy 25 year old man shortly after he finished eating lunch was cloudy but showed normal results on a multiple reagent test strip analysis. The most likely cause of the turbidity:
Phosphates (this can occur shortly after finishing a meal)
In which of the following metabolic diseases will urine turn dark brown to black upon standing?
Alkaptonuria
Urine osmolality is related to?
Specific gravity
Urine specific gravity is an index of the ability of the kidney to?
Concentrate the urine
Osmolality is a measure of?
Dissolved particles, including ions
A patient urine sample has an increased protein and a high specific gravity. Which of the following would be a more accurate measure of urine concentration?
Osmolality
To prepare a solution appropriate for quality control of the refractometer, the lab tech should use?
Sodium Chloride with a specific gravity of 1.022
A urine’s specific gravity is directly proportional to its?
Dissolved solids
Isothenuria is associated with a specific gravity which is usually?
Fixed around 1.010
The fluid leaving the glomerulus normally has a specific gravity of ?
1.010
A deficiency in arginine vasopressin (antidiuretic hormone ADH) is associated with an…..
Low urine specific gravity
When using a refractometer to measure urine concentration, the lab tech must correct for which of the following in their calculations?
Glucose
Calibration of refractometers is performed by measuring the specific gravity of distilled water and:
Sodium Chloride
The method of choice for performing a specific gravity measurement of urine following administration of x-ray contrast dye is:Regent test stri
Reagent test strip
Which of the following urinary parameters are measured during the course of concentration and dilution tests to assess renal tubular function?
Osmolality and specific gravity
Which of the following urine results is most likely to be affected by prolonged exposure to light?
eGFR calculated by the MDRD-IDMS traceable study equation takes into account the patient’s age, race, gender, and serum concentration of which of the following?
The creatinine clearance is reported in:
Which of the following can give a false-negative urine protein reading?
Which of the following substances may interfere with the reagent test strip pad for leukocyte esterase and yield a false-negative result?
Excess urine on the reagent test strip can turn a normal pH result into a falsely acidic pH when which of the following reagents runs into the pH pad?
A urine specimen with an elevated urobilinogen and a negative bilirubin may indicate:
