by Strasinger
Which of the following would be most affected by allowing a urine sample to sit at
room temperature three hours before analysis?
A. Occult blood
B. pH
C. Specific gravity
D. Protein - ANSWER:B. pH
Which of the following specimens usually eliminates contamination of the urine with
entities from the external genitalia and the distal urethra?
A. First morning specimen
B. Midstream "clean catch" specimen
C. Random specimen
D. 4-hour timed collection - ANSWER:B. Midstream "clean catch" specimen
An unpreserved urine specimen collected at midnight is kept at room temperature
until the morning hospital shift. Which of the following changes will most likely
occur?
A. Decrease in urine color and clarity
B. Decrease in pH and specific gravity
C. Decrease in glucose and ketones
D. Decrease in bacteria and nitrite - ANSWER:C. Decrease in glucose and ketones
The specific gravity of the glomerular filtrate is __________.
A. 1.000
B. 1.010
C. 1.025
D. 1.040 - ANSWER:B. 1.010
Which of the following is the principle of the reagent strip test from pH?
A. A double indicator reaction
B. The protein error of indicators
C. the diazo reaction
D. A dye-binding reaction - ANSWER:A. A double indicator reaction
Glucosuria not accompanied by hyperglycemia is seen in patients with:
A. Hormonal disorders
,B. Gestational diabetes
C. Diabetes mellitus
D. Renal disease - ANSWER:D. Renal disease
Ketonuria can be caused by:
A. Ability to use carbohydrates
B. Adequate intake of carbohydrates
C. Decreased metabolism of carbohydrates
D. Excessive loss of carbohydrates - ANSWER:D. Excessive loss of carbohydrates
Myoglobinuria may be caused by:
A. Decreased glomerular filtration
B. Incompatible blood transfusions
C. Strenuous exercise
D. Biliary obstruction - ANSWER:C. Strenuous exercise
A patient with severe back pain comes to the emergency room. The urine has a 1+
reagent strip reading for blood and a specific gravity of 1.030. This can aid in
confirming a diagnosis of _________.
A. Pyelonephritis
B. Appendicitis
C. Renal calculi
D. Multiple myeloma - ANSWER:C. Renal calculi
When a reagent strip is positive for bilirubin, it can be assumed that the bilirubin:
A. Is conjugated
B. Has passed through the small intestine
C. Is attached to protein
D. Is unconjugated - ANSWER:A. Is conjugated
Urinary casts are formed in:
A. Distal tubules and collecting ducts
B. Distal tubules and loops of Henle
C. Proximal and distal tubules
D. Proximal tubules and loops of Henle - ANSWER:A. Distal tubules and collecting
ducts
Anti-glomerular basement antibody is seen with:
A. Wegener's granulomatosis
B. IgA nephropathy
C. Goodpasture's syndrome
, D. Diabetic nephropathy - ANSWER:C. Goodpasture's syndrome
Pyelonephritis can be differentiated from cystitis by the presence of:
A. Eosinophils
B. Hyaline Casts
C. White Blood Cells
D. Bacteriuria - ANSWER:C. White Blood Cells
The location of epithelial cells in the urinary tract in descending order is:
A. Squamous, transitional, renal tubular
B. Transitional, renal tubular, squamous
C. Renal tubular, transitional, squamous
D. Squamous, renal tubular, transitional - ANSWER:C. Renal tubular, transitional,
squamous
In an unpreserved urine specimen left at room temperature overnight, which of the
following have increased?
A. Bacteria and nitrite
B. Specific gravity and bilirubin
C. Glucose and ketones
D. Urobilinogen and protein - ANSWER:A. Bacteria and nitrite
The test for which of the following results should be repeated?
A. Positive blood and protein
B. pH 7.0 with ammonium biurate crystals
C. Positive nitrite and leukocyte esterase
D. pH 5.0, WBCs, and triple phosphate crystals - ANSWER:D. pH 5.0, WBCs, and triple
phosphate crystals
In a patient with chronic renal disease, in whom the kidneys can no longer adjust
urine concentration, the urine specific gravity would be:
A. 1.000
B. 1.010
C. 1.020
D. 1.030 - ANSWER:B. 1.010
Urine pH usually ranges from:
A. 4.0 to 9.0
B. 4.5 to 7.0
C. 4.5 to 8.0
D. 5.0 to 6.0 - ANSWER:C. 4.5 to 8.0