Physical Examination of Urine

Question 1

The primary pigment responsible for normal urine color is

Answer 1

Urochrome

Question 2

A dark yellow urine producing yellow foam may contain

Answer 2

Bilirubin

Question 3

black urine indicates

Answer 3

melanin

Question 4

The color of urine specimen containing blood can be contributed to all of the following except

Answer 4

Blood type of the patient

Question 5

Urine specimen that turns black after standing may contain

Answer 5

Homogentistic acid

Question 6

Which of the following specific gravity readings correlates with a pale yellow urine?

Answer 6

1.005

Question 7

Specimens that contain intact red blood cells can be visually distinguished from specimens that contain hemoglobin because:

Answer 7

Intact red blood cells produce a cloudy specimen

Question 8

Urine from a patient diagnosed with hepatitis will appear:

Answer 8

Amber

Question 9

The pigment responsible for a pink precipitate in refrigerated urine is:

Answer 9

Uroerythrin

Question 10

The presence of a white precipitate in freshly voided urine can be caused by:

Answer 10

Amorphous phosphates in alkaline urine

Question 11

The addition of dilute acetic acid to a cloudy urine specimen will dissolve

Answer 11

Amorphous phosphate

Question 12

Slightly warming a turbid urine specimen may dissolve

Answer 12

amorphous urates

Question 13

an antidiuretic hormone deficiency is associated with a

Answer 13

low specific gravity

Question 14

the specific gravity of urine is directly proportional to its

Answer 14

dissolved solids

Question 15

a patient who has been diagnosed with diabetes mellitus will produce urine with

Answer 15

increased volume and increased specific gravity

Question 16

if a refractometer reads 1.003 with distilled water, the medical laboratory scientist should

Answer 16

calibrate the refractometer by adjusting the set screw

Question 17

a urine with the same specific gravity as the ultrafiltrate is called

Answer 17

isothenuric

Question 18

a specimen with a specific gravity as the ultrafiltrate is called

Answer 18

radiographic contrast media

Question 19

a patient with phenylketonuria has an odor of

Answer 19

musty

Question 20

what color would a pseudomonas infection cause

Answer 20

green

Question 21

the refractive index compares

Answer 21

light velocity in air with light velocity in solutions

Question 22

specific gravity is a measure of

Answer 22

density

Question 23

a clinically significant cause of turbidity is

Answer 23

squamous epithelial cells

Question 24

which of the following statements concerning measurement of specific gravity by refractometer is not true

Answer 24

the refractometer must be calibrated after every specimen

Question 25

which of the urinalysis results needs further investigation

Answer 25

A port wine colored specimen with a negative test for blood

Question 26

results of a specific gravity reading obtained by refractometer in the urology clinic do not agree with the reading obtained by the laboratory’s automated reagent strip reader. The laboratory should

Answer 26

report the results from the reagent strip reader

Question 27

bacterial decomposition of urea produces urine that has an odor resembling

Answer 27

ammonia

Question 28

A urine specimen that remains at room temperature for several hours may develop a darker yellow color

Answer 28

true

Question 29

a pale yellow urine is a primary indication of impaired renal function

Answer 29

false

Question 30

clear red urine and red plasma are associated with myoglobin

Answer 30

true

Question 31

collection of a midstream clean-catch specimen can affect the clarity of a urine specimen

Answer 31

true

Question 32

urine specific gravity can be measured by both physical and chemical methods

Answer 32

true

Question 33

urine specific gravity is equally influenced by the presence of glucose and sodium

Answer 33

false

Question 34

the density of a urine specimen can affect the frequency of a sound wave

Answer 34

true

Question 35

a supervisor should be concerned if a specific gravity reading of 1.008 is reported on a turbid urine specimen

Answer 35

false

Question 36

urine with a strong ammonia odor is an indication of a urinary tract infection

Answer 36

true

Question 37

osmolality is affected only by the number of particles present in urine

Answer 37

true