Introduction to urinalysis

Question 1

urea is a product of

Answer 1

protein and amino acid metabolism

Question 2

to determine whether a specimen is urine, measure the concentration of

Answer 2

urea and creatinine

Question 3

the average daily volume of urine produced by a normal adult is approximately

Answer 3

1200 mL

Question 4

a person exhibiting obliguria would have a urine volume of

Answer 4

200 to 500 mL

Question 5

which of the following terms is correctly matched with urine output

Answer 5

polyuria 3000 mL in 24 hours

Question 6

the polyuria associated with diabetes mellitus is caused by

Answer 6

the presence of excess glucose in the urine

Question 7

urine from a patient with diabetes insipidus has

Answer 7

increased volume and decreased specific gravity

Question 8

a patient with polyuria shows a high specific gravity in the urine. The patient should be evaluated for

Answer 8

diabetes mellitus

Question 9

persons taking diuretics can be expected to produce

Answer 9

polyuria

Question 10

a urine specimen may be rejected by the laboratory because

Answer 10

nonmatching label and requisition form

Question 11

an unpreserved urine specimen left at room temperature overnight will have decreased

Answer 11

glucose and ketones

Question 12

which of the following will be least affected in an unpreserved specimen left at room temperature overnight

Answer 12

protein

Question 13

red blood cells will disintegrate more rapidly in urine that is

Answer 13

dilute and alkaline

Question 14

the primary cause of the changes that take place in unpreserved urine is

Answer 14

bacterial growth

Question 15

which of the following urine chemicals will deteriorate when exposed to light

Answer 15

bilirubin

Question 16

which of the following is least likely to occur if a urine specimen stands at room temperature for more than 2 hours

Answer 16

decreased pH

Question 17

sodium fluoride used as a preservative for urinalysis best protects

Answer 17

drugs

Question 18

a urine specimen containing a large amount of precipitated amorphous material may have been preserved using

Answer 18

refrigeration

Question 19

in the laboratory, the preferred method of urine preservation is

Answer 19

refrigeration

Question 20

a specimen for routine urinalysis and culture can be preserved using

Answer 20

boric acid

Question 21

all of the following are good preservatives of urinary cellular elements except

Answer 21

sodium fluoride

Question 22

before analysis a refrigerated urine specimen must be

Answer 22

returned to room temperature

Question 23

the recommended specimen for routine urinalysis testing is the

Answer 23

first morning specimen

Question 24

the required specimen for quantitative analysis of urinary constituents is the

Answer 24

timed specimen

Question 25

first morning specimen is frequently requested to confirmed

Answer 25

orthostatic proteinuria

Question 26

the first morning specimen from a patient with no history of symptoms for diabetes is positive for glucose, The patient should

Answer 26

be asked to collect the second morning specimen

Question 27

the specimen of choice for routine urinalysis is the first morning urine because it

Answer 27

is more concentrated to better detect abnormalities

Question 28

all of the following specimens are acceptable for urine culture except

Answer 28

timed specimen

Question 29

quantitation of a substance that varies with daily activities should be performed on a

Answer 29

timed specimen

Question 30

failure to empty the bladder before beginning the collection of a timed urine specimen will

Answer 30

cause falsely increased results

Question 31

an alternative to the catheterized specimen is the

Answer 31

midstream clean catch specimen

Question 32

the least contaminated specimen for bacterial culture is the

Answer 32

suprapubic aspiration

Question 33

the three glass collection is used to diagnosis of

Answer 33

prostate infection

Question 34

documentation of appropriate handling of specimens for drug analysis is provided by the

Answer 34

chain of custody form

Question 35

the liver breaks down protein to form what waste product

Answer 35

amino acids

Question 36

an increase in urine production during the night is described as

Answer 36

nocturia

Question 37

where should labels on urine specimen containers be placed

Answer 37

container

Question 38

increased turbidity in urine stored at room temperature is usually caused by

Answer 38

bacterial growth

Question 39

what is the maximum length of time a urine specimen can remain unpreserved at room temperature before testing

Answer 39

2 hours

Question 40

urine contains organic and inorganic chemicals that can vary with body metabolic functions

Answer 40

true

Question 41

medical laboratory scientists performing urinalysis can determine whether a specimen is urine from the presence of formed elements

Answer 41

true

Question 42

dietary intake does not influence urine volume

Answer 42

false

Question 43

polydipsia is symptom of both diabetes mellitus and diabetes insipidus

Answer 43

true

Question 44

urine specimen label should include the date and time of collection

Answer 44

true

Question 45

urine that remains unpreserved at room temperature will show an increase in the concentrations of nitrate, glucose, and white blood cells

Answer 45

false

Question 46

a specimen delivered to the laboratory in a gray-top vacutainer is acceptable for urinalysis

Answer 46

false

Question 47

a urine bacterial culture should not be performed on a catheterized specimen

Answer 47

false

Question 48

random urines are preferred over first morning for testing

Answer 48

false

Question 49

chloride is an organic substance found in urine

Answer 49

true