About this Study Set
This study set covers Medical Laboratory Science through
20 practice questions.
A study guide covering the procedures for physical and chemical urine analysis and the methodology for pregnancy testing using beta-hCG detection. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 20 questions from the
Physical and Chemical Examination of Urine and Pregnancy Testing study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What is the recommended background for determining the color of a urine specimen?
-
A
Black background
-
B
White background
-
C
Translucent screen
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D
No background
2
Which urine color is associated with the presence of bilirubin?
-
A
Green
-
B
Black
-
C
Orange
-
D
Red
3
What is the cause of a green urine color?
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A
Pseudomonas
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B
Bilirubin
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C
Melanin
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D
Blood
4
To determine the clarity of a urine specimen, what should it be examined against?
-
A
A white wall
-
B
A light source
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C
Printed text
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D
A dark cloth
5
Which of the following is a method used to determine the specific gravity of urine?
-
A
Centrifugation
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B
Urinometry
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C
Titration
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D
Chromatography
6
What is the primary function of reagent strips in urinalysis?
-
A
Microscopic examination
-
B
Rapid screening
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C
Bacterial culture
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D
pH neutralization
7
How should excess urine be removed from a reagent strip after dipping?
-
A
Shaking it vigorously
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B
Touching the edge to the tube
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C
Wiping it with a cloth
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D
Air drying
8
What should be done to prevent 'run-on' during reagent strip testing?
-
A
Hold the strip sideways
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B
Hold the strip downwards
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C
Cut the strip
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D
Add more urine
9
Why must reagent strips be kept in an opaque, tightly capped container?
-
A
To keep them cold
-
B
To protect from light and moisture
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C
To keep them sterile
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D
To prevent evaporation
10
What is the threshold for the expiration of reagent strips?
-
A
They can be used anytime
-
B
Do not use beyond the expiration date
-
C
Only if they change color
-
D
Only if kept in the fridge
11
What hormone does a pregnancy test detect?
-
A
Insulin
-
B
Beta-hCG
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C
Cortisol
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D
Thyroxine
12
When does beta-hCG become detectable after fertilization?
-
A
1-2 days
-
B
8-10 days
-
C
20-25 days
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D
1 month
13
What does a pregnancy test result with colored lines in both control and test regions indicate?
-
A
Negative
-
B
Positive
-
C
Invalid
-
D
Inconclusive
14
What does a pregnancy test result with only one line in the control region indicate?
-
A
Positive
-
B
Negative
-
C
Invalid
-
D
Error
15
What does an invalid pregnancy test result look like?
-
A
No lines at all
-
B
Two lines
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C
One line in the test region only
-
D
One line in the control region
16
Which condition can result in elevated beta-hCG levels other than pregnancy?
-
A
Diabetes
-
B
Anemia
-
C
Choriocarcinoma
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D
Hypertension
17
How many drops of urine are required for the pregnancy test procedure?
-
A
1 drop
-
B
2 drops
-
C
3 drops
-
D
5 drops
18
What should be done if a reagent strip shows discoloration on the pads?
-
A
Use it immediately
-
B
Discard it
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C
Wipe it off
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D
Ignore it
19
What is the recommended storage temperature for reagent strips?
-
A
Below 30 degrees Celsius
-
B
Frozen
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C
Above 50 degrees Celsius
-
D
In direct sunlight
20
What substance is associated with black urine?
-
A
Homogentisic acid
-
B
Bilirubin
-
C
Pseudomonas
-
D
Blood
