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Question 1 of 20
1. Question
Which of the following collection types should be performed to obtain a highly concentrated urine specimen?
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Question 2 of 20
2. Question
A deficiency in arginine vasopressin (antidiuretic hormone [ADH]) is associated with:
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Question 3 of 20
3. Question
When using a refractometer to measure urine concentration, the laboratorian must correct for which of the following in their calculations?
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Question 4 of 20
4. Question
Which of the following collection methods would account for diurnal variation when quantitatively measuring urinary analytes?
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Question 5 of 20
5. Question
The method of choice for determining urine concentration following administration of x-ray contrast dye is:
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Question 6 of 20
6. Question
Which of the following urinary parameters may be measured to assess renal tubular function?
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Question 7 of 20
7. Question
Refractive index is a comparison of light:
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Question 8 of 20
8. Question
The presence of biliverdin may cause a urine sample to appear:
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Question 9 of 20
9. Question
A urine sample collected from a 5-day-old baby has a noticeably sweet odor reminiscent of caramel or burnt sugar. This odor is most commonly associated with:
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Question 10 of 20
10. Question
A random urine sample from a patient with diabetes insipidus is most likely to appear:
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Question 11 of 20
11. Question
Patients that produce more than 3000 mL (3 L) of urine in a 24-hour period are described as having:
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Question 12 of 20
12. Question
A urine sample with specific gravity of 1.003 will likely appear:
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Question 13 of 20
13. Question
After receiving a timed urine for quantitative analysis, the laboratorian must first:
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Question 14 of 20
14. Question
A falsely low result for urobilinogen may occur if the urine specimen is:
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Question 15 of 20
15. Question
Which of the following urine results is most likely to be affected by prolonged light exposure?
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Question 16 of 20
16. Question
The results in this table are obtained on a urine specimen collected at 8:00 AM:
test
result
color
yellow
clarity
hazy
glucose
250 mg/dL
bilirubin
negative
ketones
40mg/dL
specific gravity
1.010
blood
negative
pH
6.0
protein
100 mg/dL
urobilinogen
0.2mg/dL
nitrite
positive
leukocyte esterase
moderate
If the sample is stored unrefrigerated and retested at 12:00 PM, which of the following test results would likely be decreased due to the storage conditions?
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Question 17 of 20
17. Question
Which of the following would be affected by allowing a urine specimen to remain at room temperature for 3 hours before analysis?
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Question 18 of 20
18. Question
The glucose test pad on a test strip may yield a false-positive result in the presence of:
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Question 19 of 20
19. Question
Which of the following confirmatory tests has historically been used to semi-quantitatively determine the presence of urinary ketones?
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Question 20 of 20
20. Question
The occult blood test pad on a test strip may yield a false-positive result in the presence of:
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