Serum Sample and Test Measures
Authored by Rachel Randall
Science
University
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21 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a serum sample cannot be tested for 4 hours, it should be:
Kept at room temperature
Refrigerated at 2-8°C
Frozen at -20°C
Discarded and recollected
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The sensitivity of a test measures:
True negatives
True positives
False positives
False negatives
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What must be done if complement interferes with a test?
Freeze and thaw before testing
Heat at 56°C for 30 min
Add anticoagulant
Centrifuge at 3,000 g
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A hemolyzed serum sample:
Is normal and acceptable
May interfere with testing
Indicates bacterial contamination
Is required for immunoassays
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The law of mass action states:
Antibody and antigen are always bound
Free and bound reactants are in equilibrium
Antibody binding sites equal antigen binding sites
Free reactants bind randomly
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The best sensitivity in an assay is associated with:
K = 1
K = 2
K = 4
K = 9
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Passive agglutination occurs when:
Antigen is naturally found on a particle
Antigen is artificially bound to particles
Antibody is attached to particles
The reaction is competitive
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