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MT AAB CHEMISTRY BRAND
NEW OFFICIAL QUESTIONS
WITH ANSWERS.
1. A urine that turns brown-black upon standing may contain
which substance? - correct answer -Homogentistic acid
2. Which one of the following causes cloudiness in a freshly
voided urine? - correct answer -White blood cells
3. What is a refractometer used to measure? - correct answer -
Specific gravity
4. All of the following systems may be used to measure the
specific gravity of urine: - correct answer -Refractometer,
harmonic oscillation, or reagent test strip
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5. All of the following systems may be used to measure the
specific gravity of urine EXCEPT: - correct answer -
Hydroelectric focusing
6. What is the best single indicator of renal disease? - correct
answer -Proteinuria
7. All of the following apply to the dipstick test for urine protein
estimation by the dipstick method, based on the protein error of
indicators, EXCEPT which one? - correct answer -The color
change on the dipstick is due to the pH change
8. All of the following apply to the dipstick test for urine protein
estimation by the dipstick method, based on the protein error of
indicators: - correct answer -Most of the indicator is in the non-
iodized form, the protein will combine with the non-iodized form
of the indicator, and protein combined with the indicator
changes into the ratio of ionized and non-iodized forms.
9. Which of the following does NOT apply to urine protein
estimation by the dipstick method? - correct answer -Bence-
Jones protein interferes with the measurement of albumin
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10. All of the following apply to urine protein estimation by the
dipstick method? - correct answer -Highly alkaline buffered
urine can cause a false positive result, the principle of the test
is the protein error of indicators, the test is more sensitive to
albumin than to globulin.
11. Which of the following is true of the detection of urinary
glucose? - correct answer -Any reducing substance can give a
false positive reaction with the copper reduction method for
glucose
12. The urine dipstick test for occult blood depends on which
fact? - correct answer -Hemoglobin can act as a peroxidase
13. Which of the following statements is NOT true? - correct
answer -In a urine culture, 10^2 microorganisms/mL of urine is
considered significant
14. The following statements about urine cultures are true: -
correct answer -A clean catch urine is preferable, in most
instances, to a catheterized specimen, the presence of bacteria
in the uncentrifuged specimen of urine collected under
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controlled conditions is associated with a significant colony
count, and the presence of bacteriuria can be recognized by a
positive nitrite result.
15. Red blood cells in the urine may be confused with all of the
following EXCEPT which one? - correct answer -Cholesterol
crystals
16. RBCs in the urine may be confused with the following: -
correct answer -Oil droplets, yeast cells, and calcium oxalate
crystals
17. Which statement does NOT apply to WBCs in the urine
sediment: - correct answer -WBCs in the urine must be
accompanied by proteinuria
18. The following statements apply to WBCs in the urine
sediment: - correct answer -A few WBCs may be present in
normal urine, WBCs in urine appear spherical and granular, an
increase in WBCs is associated with an inflammatory process.
MT AAB CHEMISTRY BRAND
NEW OFFICIAL QUESTIONS
WITH ANSWERS.
1. A urine that turns brown-black upon standing may contain
which substance? - correct answer -Homogentistic acid
2. Which one of the following causes cloudiness in a freshly
voided urine? - correct answer -White blood cells
3. What is a refractometer used to measure? - correct answer -
Specific gravity
4. All of the following systems may be used to measure the
specific gravity of urine: - correct answer -Refractometer,
harmonic oscillation, or reagent test strip
, Page | 2
5. All of the following systems may be used to measure the
specific gravity of urine EXCEPT: - correct answer -
Hydroelectric focusing
6. What is the best single indicator of renal disease? - correct
answer -Proteinuria
7. All of the following apply to the dipstick test for urine protein
estimation by the dipstick method, based on the protein error of
indicators, EXCEPT which one? - correct answer -The color
change on the dipstick is due to the pH change
8. All of the following apply to the dipstick test for urine protein
estimation by the dipstick method, based on the protein error of
indicators: - correct answer -Most of the indicator is in the non-
iodized form, the protein will combine with the non-iodized form
of the indicator, and protein combined with the indicator
changes into the ratio of ionized and non-iodized forms.
9. Which of the following does NOT apply to urine protein
estimation by the dipstick method? - correct answer -Bence-
Jones protein interferes with the measurement of albumin
, Page | 3
10. All of the following apply to urine protein estimation by the
dipstick method? - correct answer -Highly alkaline buffered
urine can cause a false positive result, the principle of the test
is the protein error of indicators, the test is more sensitive to
albumin than to globulin.
11. Which of the following is true of the detection of urinary
glucose? - correct answer -Any reducing substance can give a
false positive reaction with the copper reduction method for
glucose
12. The urine dipstick test for occult blood depends on which
fact? - correct answer -Hemoglobin can act as a peroxidase
13. Which of the following statements is NOT true? - correct
answer -In a urine culture, 10^2 microorganisms/mL of urine is
considered significant
14. The following statements about urine cultures are true: -
correct answer -A clean catch urine is preferable, in most
instances, to a catheterized specimen, the presence of bacteria
in the uncentrifuged specimen of urine collected under
, Page | 4
controlled conditions is associated with a significant colony
count, and the presence of bacteriuria can be recognized by a
positive nitrite result.
15. Red blood cells in the urine may be confused with all of the
following EXCEPT which one? - correct answer -Cholesterol
crystals
16. RBCs in the urine may be confused with the following: -
correct answer -Oil droplets, yeast cells, and calcium oxalate
crystals
17. Which statement does NOT apply to WBCs in the urine
sediment: - correct answer -WBCs in the urine must be
accompanied by proteinuria
18. The following statements apply to WBCs in the urine
sediment: - correct answer -A few WBCs may be present in
normal urine, WBCs in urine appear spherical and granular, an
increase in WBCs is associated with an inflammatory process.
