MLS Urinalysis Exam with verified
answers
Which of the following is impermeable to water? - correct answer
n n n n n n n n n n n
✔Ascending Loop of Henle n n n
Normal renal blood flow is approximately: - correct answer ✔
n n n n n n n n n
The approximate renal threshold for glucose is: - correct answer ✔160-180
n n n n n n n n n n n
mg/dL
Which of the following would be considered a CLIA waived test? - correct
n n n n n n n n n n n n n
answer ✔Visual inspection of a urine dipstick
n n n n n n
Which of the following is not a function of the kidney? - correct answer
n n n n n n n n n n n n n n
✔Removal of excess protein from the blood
n n n n n n
The structure of the nephron that functions as a non-selective filter is the: -
n n n n n n n n n n n n n n
correct answer ✔Glomerulus
n n
An unpreserved urine specimen collected at midnight is kept at room
n n n n n n n n n n n
temperature until the next morning. Which of the following changes most
n n n n n n n n n n n
likely will occur? - correct answer ✔
n n n n n n
,More than 66% of the filtered water, sodium, and chloride, and 100% of
n n n n n n n n n n n n n
filtered glucose, amino acids, and proteins are reabsorbed in which part of
n n n n n n n n n n n n
the nephron? - correct answer ✔Proximal convoluted tubule
n n n n n n n
A 35-year-old diabetic woman is suspected of developing renal insufficiency.
n n n n n n n n n n
Which of the following specimens should be obtained to determine the
n n n n n n n n n n n
amount of creatinine being excreted in the urine? - correct answer ✔24 hour
n n n n n n n n n n n n
ntimed collection
n
Which of the following describes a preferred collection method? - correct
n n n n n n n n n n n
answer ✔Clean catch n n
The major function of the Loop of Henle is to: - correct answer
n n n n n n n n n n n n n
✔Concentrate the urine n n
Which of the following physical characteristics provides the best indicator of
n n n n n n n n n n n
urine concentration and body hydration? - correct answer ✔
n n n n n n n n
What would you expect to happen to urine volume after an injection of
n n n n n n n n n n n n n
ADH? - correct answer ✔Decreased urine volume excreted
n n n n n n n
Which of the following is the most common form of urine preservation,
n n n n n n n n n n n n
providing the least amount of interference? - correct answer ✔Refrigeration
n n n n n n n n n
Which of the following is a pre-analytical component of a quality assessment
n n n n n n n n n n n
program? - correct answer ✔Collection instructions for a patient
n n n n n n n n n
,A urine sample is primarily acidic in nature (pH 5.0-6.0), but can vary
n n n n n n n n n n n n n
depending on the time of day and diet. What is the overall normal range for
n n n n n n n n n n n n n n
nurine pH? - correct answer ✔4.5-8.0
n n n n n
Which of the following best aids in the differentiation of hemoglobinuria and
n n n n n n n n n n n
hematuria? - correct answer ✔Microscopic exam
n n n n n n
Which dipstick method uses a double-indicator system of methyl red and
n n n n n n n n n n n
bromthymol blue? - correct answer ✔pH n n n n n
Which of the following are characteristic urine findings from a patient with
n n n n n n n n n n n n
hemolytic jaundice? - correct answer ✔Negative bilirubin with increased
n n n n n n n n n
urobilinogen
In which instance would you expect to see a positive urine ketone with a
n n n n n n n n n n n n n n
negative urine glucose? - correct answer ✔
n n n n n n
Pseudo-peroxidase activity of ___________ is used to produce a color n n n n n n n n n n
reaction to test for the analyte. - correct answer ✔Hemoglobin
n n n n n n n n n
Urobilinogen is formed from which of the following? - correct answer
n n n n n n n n n n n
✔Reduction of conjucated bilirubin by intestinal bacteria
n n n n n n
The bilirubin reagent strip test and tablet tests are based on which reaction?
n n n n n n n n n n n n
n- correct answer ✔The coupling of bilirubin with a diazonium salt
n n n n n n n n n n
Positive leukocyte esterase and nitrite chemical test strips are likely to be
n n n n n n n n n n n n
indicative of what? - correct answer ✔Bacterial infection of the urinary tract
n n n n n n n n n n n
, The leukocyte esterase test is negative, but leukocytes are present in the
n n n n n n n n n n n n
urine. What is the most likely cause of this discrepancy? - correct answer
n n n n n n n n n n n n n
✔White blood cells present are lymphocytes
n n n n n
Which of the following would be most likely to cause a false positive nitrite
n n n n n n n n n n n n n n
dipstick test? - correct answer ✔
n n n n n
Which of the following statements best describes the protein reagent test
n n n n n n n n n n n
strip? - correct answer ✔The protein accepts hydrogen ions from an
n n n n n n n n n n n
indicator dye without a change in pH, which results in a color change
n n n n n n n n n n n n
You have a physician on the phone questioning a negative urine bilirubin
n n n n n n n n n n n n
result that was reported on a patient in the ER. Her patient is jaundiced, so
n n n n n n n n n n n n n n n
she believes the result is incorrect. Which of the following is not a possible
n n n n n n n n n n n n n n
explanation of the negative test result? - correct answer ✔The patient has a
n n n n n n n n n n n n n
bile duct obstruction
n n
You receive an outpatient sample for urinalysis and obtain the following
n n n n n n n n n n n
results:
MACROSCOPIC EXAM n n
Color = Yellow
n n
Clarity = Hazy n n
Specific Gravity = 1.024
n n n
pH = 9.0
n n
Protein = Negative n n
Glucose = Negative n n
answers
Which of the following is impermeable to water? - correct answer
n n n n n n n n n n n
✔Ascending Loop of Henle n n n
Normal renal blood flow is approximately: - correct answer ✔
n n n n n n n n n
The approximate renal threshold for glucose is: - correct answer ✔160-180
n n n n n n n n n n n
mg/dL
Which of the following would be considered a CLIA waived test? - correct
n n n n n n n n n n n n n
answer ✔Visual inspection of a urine dipstick
n n n n n n
Which of the following is not a function of the kidney? - correct answer
n n n n n n n n n n n n n n
✔Removal of excess protein from the blood
n n n n n n
The structure of the nephron that functions as a non-selective filter is the: -
n n n n n n n n n n n n n n
correct answer ✔Glomerulus
n n
An unpreserved urine specimen collected at midnight is kept at room
n n n n n n n n n n n
temperature until the next morning. Which of the following changes most
n n n n n n n n n n n
likely will occur? - correct answer ✔
n n n n n n
,More than 66% of the filtered water, sodium, and chloride, and 100% of
n n n n n n n n n n n n n
filtered glucose, amino acids, and proteins are reabsorbed in which part of
n n n n n n n n n n n n
the nephron? - correct answer ✔Proximal convoluted tubule
n n n n n n n
A 35-year-old diabetic woman is suspected of developing renal insufficiency.
n n n n n n n n n n
Which of the following specimens should be obtained to determine the
n n n n n n n n n n n
amount of creatinine being excreted in the urine? - correct answer ✔24 hour
n n n n n n n n n n n n
ntimed collection
n
Which of the following describes a preferred collection method? - correct
n n n n n n n n n n n
answer ✔Clean catch n n
The major function of the Loop of Henle is to: - correct answer
n n n n n n n n n n n n n
✔Concentrate the urine n n
Which of the following physical characteristics provides the best indicator of
n n n n n n n n n n n
urine concentration and body hydration? - correct answer ✔
n n n n n n n n
What would you expect to happen to urine volume after an injection of
n n n n n n n n n n n n n
ADH? - correct answer ✔Decreased urine volume excreted
n n n n n n n
Which of the following is the most common form of urine preservation,
n n n n n n n n n n n n
providing the least amount of interference? - correct answer ✔Refrigeration
n n n n n n n n n
Which of the following is a pre-analytical component of a quality assessment
n n n n n n n n n n n
program? - correct answer ✔Collection instructions for a patient
n n n n n n n n n
,A urine sample is primarily acidic in nature (pH 5.0-6.0), but can vary
n n n n n n n n n n n n n
depending on the time of day and diet. What is the overall normal range for
n n n n n n n n n n n n n n
nurine pH? - correct answer ✔4.5-8.0
n n n n n
Which of the following best aids in the differentiation of hemoglobinuria and
n n n n n n n n n n n
hematuria? - correct answer ✔Microscopic exam
n n n n n n
Which dipstick method uses a double-indicator system of methyl red and
n n n n n n n n n n n
bromthymol blue? - correct answer ✔pH n n n n n
Which of the following are characteristic urine findings from a patient with
n n n n n n n n n n n n
hemolytic jaundice? - correct answer ✔Negative bilirubin with increased
n n n n n n n n n
urobilinogen
In which instance would you expect to see a positive urine ketone with a
n n n n n n n n n n n n n n
negative urine glucose? - correct answer ✔
n n n n n n
Pseudo-peroxidase activity of ___________ is used to produce a color n n n n n n n n n n
reaction to test for the analyte. - correct answer ✔Hemoglobin
n n n n n n n n n
Urobilinogen is formed from which of the following? - correct answer
n n n n n n n n n n n
✔Reduction of conjucated bilirubin by intestinal bacteria
n n n n n n
The bilirubin reagent strip test and tablet tests are based on which reaction?
n n n n n n n n n n n n
n- correct answer ✔The coupling of bilirubin with a diazonium salt
n n n n n n n n n n
Positive leukocyte esterase and nitrite chemical test strips are likely to be
n n n n n n n n n n n n
indicative of what? - correct answer ✔Bacterial infection of the urinary tract
n n n n n n n n n n n
, The leukocyte esterase test is negative, but leukocytes are present in the
n n n n n n n n n n n n
urine. What is the most likely cause of this discrepancy? - correct answer
n n n n n n n n n n n n n
✔White blood cells present are lymphocytes
n n n n n
Which of the following would be most likely to cause a false positive nitrite
n n n n n n n n n n n n n n
dipstick test? - correct answer ✔
n n n n n
Which of the following statements best describes the protein reagent test
n n n n n n n n n n n
strip? - correct answer ✔The protein accepts hydrogen ions from an
n n n n n n n n n n n
indicator dye without a change in pH, which results in a color change
n n n n n n n n n n n n
You have a physician on the phone questioning a negative urine bilirubin
n n n n n n n n n n n n
result that was reported on a patient in the ER. Her patient is jaundiced, so
n n n n n n n n n n n n n n n
she believes the result is incorrect. Which of the following is not a possible
n n n n n n n n n n n n n n
explanation of the negative test result? - correct answer ✔The patient has a
n n n n n n n n n n n n n
bile duct obstruction
n n
You receive an outpatient sample for urinalysis and obtain the following
n n n n n n n n n n n
results:
MACROSCOPIC EXAM n n
Color = Yellow
n n
Clarity = Hazy n n
Specific Gravity = 1.024
n n n
pH = 9.0
n n
Protein = Negative n n
Glucose = Negative n n
