CIULLA: AUBF UPDATED ACTUAL
Questions and CORRECT Answers
1. Why is the first-voided morning urine specimen the most desirable specimen for routine
urinalysis?
A. Most dilute specimen of the day and therefore any chemical compounds present will not
exceed the detectability limits of the reagent strips
B. Least likely to be contaminated with microorganisms because the bladder is a sterile
environment
C. Most likely to contain protein because the patient has been in the orthostatic position during
the night
D. Most concentrated specimen of the day and therefore it is more likely that abnormalities will
be detected - CORRECT ANSWER -D
2. What substance is normally found in urine that is principally responsible for its yellow
coloration?
A. Bilirubin
B. Melanin
C. Carotene
D. Urochrome - CORRECT ANSWER - D. Urochrome
3. In certain malignant disorders, what substance is found in the urine that turns the urine dark
brown or black on exposure of the urine to air?
A. Urobilinogen
B. Indican
C. Melanin
D. Porphyrin - CORRECT ANSWER - C. Melanin
,4. What is the expected pH range of a freshly voided urine specimen?
A. 3.5—8.0
B. 3.5—9.0
C. 4.0—8.5
D. 4.5—8.0 - CORRECT ANSWER - D. 4.5—8.0
If urine specimens are allowed to stand at room temperature for an excessive amount of time, the
urine pH will become alkaline because of bacterial decomposition of
A. Protein
B. Urea
C. Creatinine
D. Ketones - CORRECT ANSWER - B. Urea
6. Which term is defined as a urine volume in excess of 2000 mL excreted over a 24-hour
period?
A. Anuria
B. Oliguria
C. Polyuria
D. Hypersthenuria - CORRECT ANSWER - C. Polyuria
7. The reagent test strips used for the detection of protein in urine are most reactive to
A. Albumin
B. Hemoglobin
C. Alpha-globulins
D. Beta-globulins - CORRECT ANSWER - A. Albumin
, 8. A urine specimen that exhibits yellow foam on being shaken should be suspected of having an
increased concentration of
A. Protein
B. Hemoglobin
C. Bilirubin
D. Nitrite - CORRECT ANSWER - C. Bilirubin
9. How should controls be run to ensure the precision and accuracy of the reagent test strips used
for the chemical analysis of urine?
A. Positive controls should be run on a daily basis and negative controls when opening a new
bottle of test strips.
B. Positive and negative controls should be run when the test strips' expiration date is passed.
C. Positive and negative controls should be run on a daily basis.
D. Positive controls should be run on a daily basis and negative controls on a weekly basis. -
CORRECT ANSWER - C. Positive and negative controls should be run on a daily basis.
10. The colorimetric reagent strip test for protein is able to detect as little as 5—20 mg of protein
per deciliter. What may cause a false-positive urine protein reading?
A. Uric acid concentration is greater than 0.5 g/day.
B. Vitamin C concentration is greater than 0.5 g/day.
C. Glucose concentration is greater than 130 mg/day.
D. pH is greater than 8.0. - CORRECT ANSWER - D. pH is greater than 8.0.
11. "Isosthenuria" is a term applied to a series of urine specimens from the same patient that
exhibit a
Questions and CORRECT Answers
1. Why is the first-voided morning urine specimen the most desirable specimen for routine
urinalysis?
A. Most dilute specimen of the day and therefore any chemical compounds present will not
exceed the detectability limits of the reagent strips
B. Least likely to be contaminated with microorganisms because the bladder is a sterile
environment
C. Most likely to contain protein because the patient has been in the orthostatic position during
the night
D. Most concentrated specimen of the day and therefore it is more likely that abnormalities will
be detected - CORRECT ANSWER -D
2. What substance is normally found in urine that is principally responsible for its yellow
coloration?
A. Bilirubin
B. Melanin
C. Carotene
D. Urochrome - CORRECT ANSWER - D. Urochrome
3. In certain malignant disorders, what substance is found in the urine that turns the urine dark
brown or black on exposure of the urine to air?
A. Urobilinogen
B. Indican
C. Melanin
D. Porphyrin - CORRECT ANSWER - C. Melanin
,4. What is the expected pH range of a freshly voided urine specimen?
A. 3.5—8.0
B. 3.5—9.0
C. 4.0—8.5
D. 4.5—8.0 - CORRECT ANSWER - D. 4.5—8.0
If urine specimens are allowed to stand at room temperature for an excessive amount of time, the
urine pH will become alkaline because of bacterial decomposition of
A. Protein
B. Urea
C. Creatinine
D. Ketones - CORRECT ANSWER - B. Urea
6. Which term is defined as a urine volume in excess of 2000 mL excreted over a 24-hour
period?
A. Anuria
B. Oliguria
C. Polyuria
D. Hypersthenuria - CORRECT ANSWER - C. Polyuria
7. The reagent test strips used for the detection of protein in urine are most reactive to
A. Albumin
B. Hemoglobin
C. Alpha-globulins
D. Beta-globulins - CORRECT ANSWER - A. Albumin
, 8. A urine specimen that exhibits yellow foam on being shaken should be suspected of having an
increased concentration of
A. Protein
B. Hemoglobin
C. Bilirubin
D. Nitrite - CORRECT ANSWER - C. Bilirubin
9. How should controls be run to ensure the precision and accuracy of the reagent test strips used
for the chemical analysis of urine?
A. Positive controls should be run on a daily basis and negative controls when opening a new
bottle of test strips.
B. Positive and negative controls should be run when the test strips' expiration date is passed.
C. Positive and negative controls should be run on a daily basis.
D. Positive controls should be run on a daily basis and negative controls on a weekly basis. -
CORRECT ANSWER - C. Positive and negative controls should be run on a daily basis.
10. The colorimetric reagent strip test for protein is able to detect as little as 5—20 mg of protein
per deciliter. What may cause a false-positive urine protein reading?
A. Uric acid concentration is greater than 0.5 g/day.
B. Vitamin C concentration is greater than 0.5 g/day.
C. Glucose concentration is greater than 130 mg/day.
D. pH is greater than 8.0. - CORRECT ANSWER - D. pH is greater than 8.0.
11. "Isosthenuria" is a term applied to a series of urine specimens from the same patient that
exhibit a
