BOC Urinalysis / Body Fluids Exam Questions with 100% Verified Correct Answers
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Course
BOC Urinalysis
Institution
BOC Urinalysis
BOC Urinalysis / Body Fluids Exam
Questions with 100% Verified Correct
Answers
d (Measure the total volume of the sample before removing an aliquot. To
calculate the total protein, measure the protein of an aliquot to learn the
mg/dL. Then multiply that answer by the number of dL in the 24-hou...
d (Measure the total volume of the sample before removing an aliquot. To
calculate the total protein, measure the protein of an aliquot to learn the
mg/dL. Then multiply that answer by the number of dL in the 24-hour
collection.) - ✔✔1) After receiving a 24 hr. urine for quantitative total protein
analysis the technician must first:
a. subculture the urine for bacteria
b. add the appropriate preservative
c. screen for albumin using a dipstick
d. measure the total volume
a (Urobilinogen is degraded by light.) - ✔✔2) False results in the
urobilinogen testing may occur if the urine specimen is:
a. exposed to light
b. adjusted to a neutral pH
c. cooled to room temp
,d. collected in a nonsterile container
b (It is common practice to share samples between the microbiology
department and urinalysis. Ideally, the culture is set up first to prevent
contamination. If that is not feasible time wise, the sample should be
aliquotted using aseptic technique, and refrigerated until it can be cultured.)
- ✔✔3) A clean catch urine is submitted to laboratory for routine urinalysis
and culture. The routine urinalysis is done first, and 3 hrs. later, the
specimen is sent to the microbiology department for culture. The specimen
should:
a. be centrifuged, and the supernatant culture
b. be rejected due to the time delay
c. not be cultured if no bacteria are seen
d. be processed for culture only if the nitrate is positive
d (Bilirubin is degraded by light. The other analytes will not be affected.) -
✔✔4) Which of the following urine results is most apt to be changed by
prolonged exposure to light?
a. pH
b. protein
c. ketones
d. bilirubin
,c (Evaluate each statement. a is incorrect because these cells don't
agglutinate. b is partially correct, but urobilinogen decreases in light. c is
true, bacterial overgrowth does lead to an alkaline urine. d is false, ketones
are produced by fat metabolism in the patient.) - ✔✔5) Urine samples
should be examined within 1 hr. of voiding because:
a. RBC's, leukocytes and casts agglutinate on standing for several hrs. at
room temp
b. urobilinogen increases and bilirubin decreases after prolonged exposure
to light
c. bacterial contamination will cause alkalinization of the urine
d. ketones will increase due to bacterial and cellular metabolism
Ketones - ✔✔6) If a urine specimen was stored uncapped at 5 degrees C
without preservation and retested at 2pm which of the following test results
would be changed due to these storage conditions?
A. glucose
B. ketones
C. protein
D. nitrite
b (Storage must inhibit bacterial growth but not kill the bacteria. Freezing
and additives are not acceptable. The most commonly used method of
, preservation is refrigeration.) - ✔✔7) A urine specimen comes to the
laboratory 7 hrs. after it is obtained. It is acceptable for culture only if the
specimen has been stored:
a. at room temp
b. at 4 - 7 C
c. frozen
d. with a preservative additive
c (Consider whether a substance can increase or decrease outside the
body. No more blood can be produced. Although the RBC may rupture,
they will still make a positive result on a biochemical strip. The amount of
solutes won't change, so specific gravity won't change. pH is affected by
metabolism of the urine components by bacteria, and room temperature is
warm enough for this to occur. Protein will not increase or decrease.) -
✔✔8) Which of the following would be affected by allowing a urine
specimen to remain at room temp for 3 hrs. before analysis:
a. occult blood
b. specific gravity
c. pH
d. protein
Daily void is approximately 1,500mL, but can range from 600-2,000mL
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