Urinalysis Practice Questions

Question 1

A patient with uncontrolled diabetes mellitus will most likely have?

Answer 1

A pale urine with a high specific gravity

Question 2

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?

Answer 2

Phenylpyruvic acid

Question 3

An ammonia-like odor is characteristically associated with urine from patients who:

Answer 3

Have an infection with Proteus spp.

Question 4

Urine that develops a port wine color after standing may contain:

Answer 4

Porphyrin

Question 5

Acid urine that contains hemoglobin will darken on standing due to the formation of?

Answer 5

Methemoglobin

Question 6

Urine from a 50 year old man was noted to turn dark red on standing. This change is caused by the presence of ?

Answer 6

Porphyrins = red

Question 7

The clarity of a urine sample should be determined:

Answer 7

Following thorough mixing of the specimen

Question 8

Milky urine from a 24 year old woman would most likely contain?

Answer 8

Many white blood cells

Question 9

A brown-black urine would most likely contain?

Answer 9

Melanin

Question 10

The yellow color of urine is primarily due to:

Answer 10

Urochrome pigment

Question 11

Red urine may be due to:

Answer 11

Myoglobin

Question 12

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:

Answer 12

Phosphates (this can occur shortly after finishing a meal)

Question 13

In which of the following metabolic diseases will urine turn dark brown to black upon standing?

Answer 13

Alkaptonuria

Question 14

Urine osmolality is related to?

Answer 14

Specific gravity

Question 15

Urine specific gravity is an index of the ability of the kidney to?

Answer 15

Concentrate the urine

Question 16

Osmolality is a measure of?

Answer 16

Dissolved particles, including ions

Question 17

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?

Answer 17

Osmolality

Question 18

To prepare a solution appropriate for quality control of the refractometer, the lab tech should use?

Answer 18

Sodium Chloride with a specific gravity of 1.022

Question 19

A urine’s specific gravity is directly proportional to its?

Answer 19

Dissolved solids

Question 20

Isothenuria is associated with a specific gravity which is usually?

Answer 20

Fixed around 1.010

Question 21

The fluid leaving the glomerulus normally has a specific gravity of ?

Answer 21

1.010

Question 22

A deficiency in arginine vasopressin (antidiuretic hormone ADH) is associated with an…..

Answer 22

Low urine specific gravity

Question 23

When using a refractometer to measure urine concentration, the lab tech must correct for which of the following in their calculations?

Answer 23

Glucose

Question 24

Calibration of refractometers is performed by measuring the specific gravity of distilled water and:

Answer 24

Sodium Chloride

Question 25

The method of choice for performing a specific gravity measurement of urine following administration of x-ray contrast dye is:Regent test stri

Answer 25

Reagent test strip

Question 26

Which of the following urinary parameters are measured during the course of concentration and dilution tests to assess renal tubular function?

Answer 26

Osmolality and specific gravity

Question 27

Which of the following urine results is most likely to be affected by prolonged exposure to light?

Question 28

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?

Question 29

The creatinine clearance is reported in:

Question 30

Which of the following can give a false-negative urine protein reading?

Question 31

Which of the following substances may interfere with the reagent test strip pad for leukocyte esterase and yield a false-negative result?

Question 32

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?

Question 33

A urine specimen with an elevated urobilinogen and a negative bilirubin may indicate: