BOC Urinalysis & Body Fluids UPDATED Questions and CORRECT Answers

BOC Urinalysis & Body Fluids UPDATED
Questions and CORRECT Answers
A patient with uncontrolled diabetes mellitus will most likely have
A. Pale urine with a high specific gravity
B. Concentrated urine with a high specific gravity
C. Pale urine with a low specific gravity

D. Dark urine with a high specific gravity - CORRECT ANSWER- A


While performing an analysis of a baby's urine, the laboratorian notices the specimen has a
"mousy" odor. Of the following substances that may be excreted in urine, the one that most
characteristically produces this odor is
A. Phenylpyruvic acid
B. Acetone
C. Coliform bacilli

D. Porphyrin - CORRECT ANSWER- A


An ammonia-like odor is characteristically associate with urine from patients who
A. Are diabetic
B. Have hepatitis
C. Have an infection with Proteus spp

D. Have a yeast infection - CORRECT ANSWER- C


Urine that develops a port wine color after standing may contain
A. Melanin
B. Porphyrins
C. Bilirubin

D. Urobilinogen - CORRECT ANSWER- B

,Acid urine that contains hemoglobin will darken on standing due to the formation of
A. Myoglobin
B. Sulfhemoglobin
C. Methemoglobin

D. RBCs - CORRECT ANSWER- C


Urine from a 50-year old man was noted to turn dark red on standing. This change is caused by
the presence of
A. Glucose
B. Porphyrins
C. Urochrome

D. Creatinine - CORRECT ANSWER- B


The clarity of a urine sample should be determined
A. Using glass tubes only; never plastic
B. Following thorough mixing of the specimen
C. After addition of sulfosalicylic acid

D. After the specimen cools to room temperature - CORRECT ANSWER- B


Milky urine from a 24 year old woman would most likely contain
A. Spermatozoa
B. May WBCs
C. RBCs

D. Bilirubin - CORRECT ANSWER- B


A brown-black urine would most likely contain
A. Bile pigment
B. Porphyrin

,C. Melanin

D. Blood cells - CORRECT ANSWER- C


The yellow color of urine is primarily due to
A. Urochrome pigment
B. Methemoglobin
C. Bilirubin

D. Homogenistic acid - CORRECT ANSWER- A


Red urine may be due to
A. Bilirubin
B. Excess urobilin
C. Myoglobin

D. Homogenistic acid - CORRECT ANSWER- C


A urine specimen collected on an apparently healthy 25-year-old man shortly after he finished
eating lunch was cloudy but showed normal results on a multiple reagent test strip analysis. The
most likely cause of the turbidity is
A. Fat
B. WBCs
C. Urates

D. Phosphates - CORRECT ANSWER- D


In which of the following metabolic diseases will turn dark brown to black upon standing?
A. Phenylketonuria
B. Alkaptonuria
C. Maple syrup disease

D. Aminoaciduria - CORRECT ANSWER- B

, Urine osmolality is related to
A. pH
B. Filtration
C. Specific gravity

D. Volume - CORRECT ANSWER- C


Urine specific gravity is an index of the ability of the kidney to
A. Filter the plasma
B. Concentrate the urine
C. Alter the hydrogen ion concentration

D. Reabsorb sodium ions - CORRECT ANSWER- B


Osmolality is a measure of
A. Dissolved particles, including ions
B. Undissociated molecules only
C. Total salt concentration

D. Molecule size - CORRECT ANSWER- A


A patient urine sample has an increased protein and a high specific gravity. Which of the
following would be a more accurate measure of urine concentration
A. Osmolality
B. Ketones
C. Refractive index

D. pH - CORRECT ANSWER- A


To prepare a solution appropriate for quality control of the refractometer, the laboratorian should
use