MLS URINALYSIS EXAM WITH ALL CORRECT & 100%
VERIFIED ANSWERS|ALREADY GRADED A+|UPDATED
TO PASS
Which of the following is impermeable to water? Correct answer-Ascending Loop of Henle
Normal renal blood flow is approximately: Correct answer-
The approximate renal threshold for glucose is: Correct answer-160-180 mg/dL
Which of the following would be considered a CLIA waived test? Correct answer-Visual inspection
of a urine dipstick
Which of the following is not a function of the kidney? Correct answer-Removal of excess protein
from the blood
The structure of the nephron that functions as a non-selective filter is the: Correct answer-
Glomerulus
An unpreserved urine specimen collected at midnight is kept at room temperature until the next
morning. Which of the following changes most likely will occur? Correct answer-
More than 66% of the filtered water, sodium, and chloride, and 100% of filtered glucose, amino
acids, and proteins are reabsorbed in which part of the nephron? Correct answer-Proximal
convoluted tubule
A 35-year-old diabetic woman is suspected of developing renal insufficiency. Which of the following
specimens should be obtained to determine the amount of creatinine being excreted in the urine?
Correct answer-24 hour timed collection
Which of the following describes a preferred collection method? Correct answer-Clean catch
The major function of the Loop of Henle is to: Correct answer-Concentrate the urine
Which of the following physical characteristics provides the best indicator of urine concentration and
body hydration? Correct answer-
What would you expect to happen to urine volume after an injection of ADH? Correct answer-
Decreased urine volume excreted
Which of the following is the most common form of urine preservation, providing the least amount
of interference? Correct answer-Refrigeration
Which of the following is a pre-analytical component of a quality assessment program? Correct
answer-Collection instructions for a patient
A urine sample is primarily acidic in nature (pH 5.0-6.0), but can vary depending on the time of day
and diet. What is the overall normal range for urine pH? Correct answer-4.5-8.0
,Which of the following best aids in the differentiation of hemoglobinuria and hematuria? Correct
answer-Microscopic exam
Which dipstick method uses a double-indicator system of methyl red and bromthymol blue?
Correct answer-pH
Which of the following are characteristic urine findings from a patient with hemolytic jaundice?
Correct answer-Negative bilirubin with increased urobilinogen
In which instance would you expect to see a positive urine ketone with a negative urine glucose?
Correct answer-
Pseudo-peroxidase activity of ___________ is used to produce a color reaction to test for the
analyte. Correct answer-Hemoglobin
Urobilinogen is formed from which of the following? Correct answer-Reduction of conjucated
bilirubin by intestinal bacteria
The bilirubin reagent strip test and tablet tests are based on which reaction? Correct answer-The
coupling of bilirubin with a diazonium salt
Positive leukocyte esterase and nitrite chemical test strips are likely to be indicative of what?
Correct answer-Bacterial infection of the urinary tract
The leukocyte esterase test is negative, but leukocytes are present in the urine. What is the most
likely cause of this discrepancy? Correct answer-White blood cells present are lymphocytes
Which of the following would be most likely to cause a false positive nitrite dipstick test? Correct
answer-
Which of the following statements best describes the protein reagent test strip? Correct answer-
The protein accepts hydrogen ions from an indicator dye without a change in pH, which results in a
color change
You have a physician on the phone questioning a negative urine bilirubin result that was reported on
a patient in the ER. Her patient is jaundiced, so she believes the result is incorrect. Which of the
following is not a possible explanation of the negative test result? Correct answer-The patient has
a bile duct obstruction
You receive an outpatient sample for urinalysis and obtain the following results:
MACROSCOPIC EXAM
Color = Yellow
Clarity = Hazy
Specific Gravity = 1.024
pH = 9.0
Protein = Negative
Glucose = Negative
Ketones = Negative
Blood = Negative
Bilirubin = Negative
Urobilinogen = 0.2 mg/dL
,Nitrite = Positive
Leukocyte esterase = Negative
What would be the most appropriate course of action to follow next? Correct answer-
You receive sample for urinalysis and obtain the following results:
MACROSCOPIC EXAM
Color = Yellow
Clarity = Clear
Specific Gravity(dipstick) = 1.005
Specific Gravity (Refractometer) = 1.030
pH = 6.5
Protein = Negative
Glucose = 500 mg/dL
Ketones = Negative
Blood = Negative
Bilirubin = Negative
Urobilinogen = 0.2 mg/dL
Nitrite = Negative
Leukocyte esterase = Negative
What is most likely the cause of the discrepant specific gravity results? Which reading should be
reported because it most accurately represents the concentrating ability of this patient's kidneys?
Correct answer-High glucose is causing the high refractometer reading, and measurement by dipstick
should be reported
In the examination of urinary sediment on glass slides, casts tend to appear on which area of the
slide? Correct answer-Mostly around the edges
Which of the following would be quantitated on LOW power? Correct answer-Casts
All of the following enhance the formation of urinary casts except: Correct answer-A pH > 8.0
Which of the following statements regarding the microscopic examination of urine sediment is false?
Correct answer-If mucus is present, the chemical test for protein should be positive
What is the name of a shrunken red cell found in highly concentrated urine? Correct answer-
Crenated cell
The findings of increased hyaline and granular casts in the urine of an otherwise healthy individual is
most often seen in which of the following? Correct answer-Recent strenuous exercise
The matrix of casts consists primarily of what? Correct answer-Tamm-Horsfall protein
A fresh urine specimen should be requested when which of the the following results is found?
Correct answer-pH of 9.0 with ammonium biurate crystals
This cast most frequently appears to have a brittle consistency. Correct answer-Waxy
What is the single most important piece of information used in identification of urinary crystals?
Correct answer-pH
, This crystal is found in alkaline urine, and is typically described as a colorless coffin lid. Correct
answer-Triple phosphate
This cell type may be seen as spherical, polyhedral or caudate forms. Correct answer-Tansitional
epithelial cells
This crystal found in acidic urine, may be seen as four-sided flat plates, wedges, or rosettes. Correct
answer-Uric acid
This crystal is typically found in acidic or neutral urine, and is commonly described as a colorless
envelope. Correct answer-Calcium oxalate
You receive a sample for a Urinalysis and obtain the following results:
MACROSCOPIC EXAM
Color = Yellow
Clarity = Hazy
Specific Gravity = 1.020
pH = 7.5
Protein = Negative
Blood = Negative
Glucose = Negative
Ketones = Negative
Bilirubin = Negative
Urobilinogen = Negative
Nitirite = Negative
Leukocyte esterase = Moderate
MICROSCOPIC EXAM
WBC = 11-25/HPF
Bacteria = Many
Which statement best explains the discrepancy between the chemical and microscopic exam?
Correct answer-The bacteria present are most likely gram positive
Xanthochromia is most often associated with which condition? Correct answer-Subarachnoid
hemorrhage
This crystal typically found in acid or neutral urine, is described as yellow-brown spheres that
demonstrate concentric circles and radial striations. Correct answer-Leucine
Crystals associated with severe liver disease include all of the following except: Correct answer-
Cystine
This urine crystal is seen as hexagonal plates in an acid pH. Correct answer-Cystine
Of the following, which would be the most significant finding on a urine microscopic exam? Correct
answer-Fatty Casts
Mass screening in adults for occult blood is performed primarily to detect what? Correct answer-
Colorectal cancer
This crystal found in acid urine, is described as colorless rectangular plates with a notch in one or
more corners. Correct answer-Cholesterol
VERIFIED ANSWERS|ALREADY GRADED A+|UPDATED
TO PASS
Which of the following is impermeable to water? Correct answer-Ascending Loop of Henle
Normal renal blood flow is approximately: Correct answer-
The approximate renal threshold for glucose is: Correct answer-160-180 mg/dL
Which of the following would be considered a CLIA waived test? Correct answer-Visual inspection
of a urine dipstick
Which of the following is not a function of the kidney? Correct answer-Removal of excess protein
from the blood
The structure of the nephron that functions as a non-selective filter is the: Correct answer-
Glomerulus
An unpreserved urine specimen collected at midnight is kept at room temperature until the next
morning. Which of the following changes most likely will occur? Correct answer-
More than 66% of the filtered water, sodium, and chloride, and 100% of filtered glucose, amino
acids, and proteins are reabsorbed in which part of the nephron? Correct answer-Proximal
convoluted tubule
A 35-year-old diabetic woman is suspected of developing renal insufficiency. Which of the following
specimens should be obtained to determine the amount of creatinine being excreted in the urine?
Correct answer-24 hour timed collection
Which of the following describes a preferred collection method? Correct answer-Clean catch
The major function of the Loop of Henle is to: Correct answer-Concentrate the urine
Which of the following physical characteristics provides the best indicator of urine concentration and
body hydration? Correct answer-
What would you expect to happen to urine volume after an injection of ADH? Correct answer-
Decreased urine volume excreted
Which of the following is the most common form of urine preservation, providing the least amount
of interference? Correct answer-Refrigeration
Which of the following is a pre-analytical component of a quality assessment program? Correct
answer-Collection instructions for a patient
A urine sample is primarily acidic in nature (pH 5.0-6.0), but can vary depending on the time of day
and diet. What is the overall normal range for urine pH? Correct answer-4.5-8.0
,Which of the following best aids in the differentiation of hemoglobinuria and hematuria? Correct
answer-Microscopic exam
Which dipstick method uses a double-indicator system of methyl red and bromthymol blue?
Correct answer-pH
Which of the following are characteristic urine findings from a patient with hemolytic jaundice?
Correct answer-Negative bilirubin with increased urobilinogen
In which instance would you expect to see a positive urine ketone with a negative urine glucose?
Correct answer-
Pseudo-peroxidase activity of ___________ is used to produce a color reaction to test for the
analyte. Correct answer-Hemoglobin
Urobilinogen is formed from which of the following? Correct answer-Reduction of conjucated
bilirubin by intestinal bacteria
The bilirubin reagent strip test and tablet tests are based on which reaction? Correct answer-The
coupling of bilirubin with a diazonium salt
Positive leukocyte esterase and nitrite chemical test strips are likely to be indicative of what?
Correct answer-Bacterial infection of the urinary tract
The leukocyte esterase test is negative, but leukocytes are present in the urine. What is the most
likely cause of this discrepancy? Correct answer-White blood cells present are lymphocytes
Which of the following would be most likely to cause a false positive nitrite dipstick test? Correct
answer-
Which of the following statements best describes the protein reagent test strip? Correct answer-
The protein accepts hydrogen ions from an indicator dye without a change in pH, which results in a
color change
You have a physician on the phone questioning a negative urine bilirubin result that was reported on
a patient in the ER. Her patient is jaundiced, so she believes the result is incorrect. Which of the
following is not a possible explanation of the negative test result? Correct answer-The patient has
a bile duct obstruction
You receive an outpatient sample for urinalysis and obtain the following results:
MACROSCOPIC EXAM
Color = Yellow
Clarity = Hazy
Specific Gravity = 1.024
pH = 9.0
Protein = Negative
Glucose = Negative
Ketones = Negative
Blood = Negative
Bilirubin = Negative
Urobilinogen = 0.2 mg/dL
,Nitrite = Positive
Leukocyte esterase = Negative
What would be the most appropriate course of action to follow next? Correct answer-
You receive sample for urinalysis and obtain the following results:
MACROSCOPIC EXAM
Color = Yellow
Clarity = Clear
Specific Gravity(dipstick) = 1.005
Specific Gravity (Refractometer) = 1.030
pH = 6.5
Protein = Negative
Glucose = 500 mg/dL
Ketones = Negative
Blood = Negative
Bilirubin = Negative
Urobilinogen = 0.2 mg/dL
Nitrite = Negative
Leukocyte esterase = Negative
What is most likely the cause of the discrepant specific gravity results? Which reading should be
reported because it most accurately represents the concentrating ability of this patient's kidneys?
Correct answer-High glucose is causing the high refractometer reading, and measurement by dipstick
should be reported
In the examination of urinary sediment on glass slides, casts tend to appear on which area of the
slide? Correct answer-Mostly around the edges
Which of the following would be quantitated on LOW power? Correct answer-Casts
All of the following enhance the formation of urinary casts except: Correct answer-A pH > 8.0
Which of the following statements regarding the microscopic examination of urine sediment is false?
Correct answer-If mucus is present, the chemical test for protein should be positive
What is the name of a shrunken red cell found in highly concentrated urine? Correct answer-
Crenated cell
The findings of increased hyaline and granular casts in the urine of an otherwise healthy individual is
most often seen in which of the following? Correct answer-Recent strenuous exercise
The matrix of casts consists primarily of what? Correct answer-Tamm-Horsfall protein
A fresh urine specimen should be requested when which of the the following results is found?
Correct answer-pH of 9.0 with ammonium biurate crystals
This cast most frequently appears to have a brittle consistency. Correct answer-Waxy
What is the single most important piece of information used in identification of urinary crystals?
Correct answer-pH
, This crystal is found in alkaline urine, and is typically described as a colorless coffin lid. Correct
answer-Triple phosphate
This cell type may be seen as spherical, polyhedral or caudate forms. Correct answer-Tansitional
epithelial cells
This crystal found in acidic urine, may be seen as four-sided flat plates, wedges, or rosettes. Correct
answer-Uric acid
This crystal is typically found in acidic or neutral urine, and is commonly described as a colorless
envelope. Correct answer-Calcium oxalate
You receive a sample for a Urinalysis and obtain the following results:
MACROSCOPIC EXAM
Color = Yellow
Clarity = Hazy
Specific Gravity = 1.020
pH = 7.5
Protein = Negative
Blood = Negative
Glucose = Negative
Ketones = Negative
Bilirubin = Negative
Urobilinogen = Negative
Nitirite = Negative
Leukocyte esterase = Moderate
MICROSCOPIC EXAM
WBC = 11-25/HPF
Bacteria = Many
Which statement best explains the discrepancy between the chemical and microscopic exam?
Correct answer-The bacteria present are most likely gram positive
Xanthochromia is most often associated with which condition? Correct answer-Subarachnoid
hemorrhage
This crystal typically found in acid or neutral urine, is described as yellow-brown spheres that
demonstrate concentric circles and radial striations. Correct answer-Leucine
Crystals associated with severe liver disease include all of the following except: Correct answer-
Cystine
This urine crystal is seen as hexagonal plates in an acid pH. Correct answer-Cystine
Of the following, which would be the most significant finding on a urine microscopic exam? Correct
answer-Fatty Casts
Mass screening in adults for occult blood is performed primarily to detect what? Correct answer-
Colorectal cancer
This crystal found in acid urine, is described as colorless rectangular plates with a notch in one or
more corners. Correct answer-Cholesterol
