Question 1

A specimen delivered to the laboratory in a gray-top Vacutainer is acceptable for urinalysis.

Accepted Answer

A) True 
 B)False

Question 2

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

Accepted Answer

A)  Deterioration of formed elements 
B)  Increased bacteria 
C)  Decreased pH 
D)  Decreased glucose

Question 3

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

Accepted Answer

A)  Cause falsely increased results 
B)  Affect the preservation of glucose 
C)  Cause falsely decreased results 
D)  Adversely affect culture results

Question 4

Red blood cells will disintegrate more rapidly in urine that is:

Accepted Answer

A)  Concentrated and acidic 
B)  Concentrated and alkaline 
C)  Dilute and acidic 
D)  Dilute and alkaline

Question 5

Dietary intake does not influence urine volume.

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

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

Accepted Answer

A)  200 mL 
B)  500 mL 
C)  1200 mL 
D)  2500 mL

Question 8

Which of the following terms is correctly matched with urine output?

Accepted Answer

A)  Anuria: 400 mL in 24 hours 
B)  Oliguria: 1000 mL in 24 hours 
C)  Polyuria: 3000 mL in 24 hours 
D)  Nocturia: no urine output

Question 9

An increase in urine production during the night is described as:

Accepted Answer

A)  Anuria 
B)  Oliguria 
C)  Polyuria 
D)  Nocturia

Question 10

Increased turbidity in urine stored at room temperature is usually caused by:

Accepted Answer

A)  Evaporation 
B)  White blood cells 
C)  Bacterial growth 
D)  Protein precipitation

Question 11

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

Accepted Answer

A)  Bilirubin 
B)  Urobilinogen 
C)  Red blood cells 
D)  Protein

Question 12

A specimen for routine urinalysis and culture can be preserved using:

Accepted Answer

A)  Sodium fluoride 
B)  Boric acid 
C)  Formalin 
D)  Toluene

Question 13

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

Accepted Answer

A)  Bacterial growth 
B)  Excessive exposure to light 
C)  Oxidation of chemical constituents 
D)  Precipitation of crystals

Question 14

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

Accepted Answer

A)  Has a high volume 
B)  Is produced while the body is in a resting state 
C)  Is more dilute to prevent false-positive reactions 
D)  Is more concentrated to better detect abnormalities

Question 15

Documentation of appropriate handling of specimens for drug analysis is provided by the:

Accepted Answer

A)  Urinalysis supervisor 
B)  Physician 
C)  Temperature readings 
D)  Chain of custody form

Question 16

Matching
State whether the following actions will cause false-positive or false-negative test results:
-The second sample of a three glass collection has a positive urine culture.

Accepted Answer

A)  False-positive 
B)  False-negative

Question 17

Matching
State whether the following actions will cause false-positive or false-negative test results:
-The temperature of a specimen for drug testing is 25℃when measured within 4 minutes of collection.

Accepted Answer

A) False-positive 
B) False-negative

Question 18

An alternative to the catheterized specimen is the:

Accepted Answer

A)  Fasting specimen 
B)  First morning specimen 
C)  Midstream clean-catch specimen 
D)  Three glass collection

Question 19

Which specimen(s)from a three glass collection do(es)not have to be examined microscopically?

Accepted Answer

A)  #1 
B)  #2 
C)  #3 
D)  All should be examined

Question 20

Matching
State whether the following actions will cause false-positive or false-negative test results:
-A patient is deprived of fluids during a 6-hour timed urine collection.

Accepted Answer

A)  False-positive 
B)  False-negative

Exam 2: Introduction to Urinalysis

A specimen delivered to the laboratory in a gray-top Vacutainer is acceptable for urinalysis.

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

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

Red blood cells will disintegrate more rapidly in urine that is:

Dietary intake does not influence urine volume.

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

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

Which of the following terms is correctly matched with urine output?

An increase in urine production during the night is described as:

Increased turbidity in urine stored at room temperature is usually caused by:

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

A specimen for routine urinalysis and culture can be preserved using:

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

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

Documentation of appropriate handling of specimens for drug analysis is provided by the:

Matching State whether the following actions will cause false-positive or false-negative test results: -The second sample of a three glass collection has a positive urine culture.

Matching State whether the following actions will cause false-positive or false-negative test results: -The temperature of a specimen for drug testing is 25℃when measured within 4 minutes of collection.

An alternative to the catheterized specimen is the:

Which specimen(s) from a three glass collection do(es) not have to be examined microscopically?

Matching State whether the following actions will cause false-positive or false-negative test results: -A patient is deprived of fluids during a 6-hour timed urine collection.