End of Chapter Questions, Module 3 Flashcards
(39 cards)
An example of a factor in preanalytic testing is
patient identification
An example of a factor in analytic testing is
accuracy in testing
An example of a factor in post-analytic testing is
critical value reporting
Blood from the wrong patient is an example of an error classified as
preanalytic
A specimen collected in the wrong evacuated tube is an example of an error classified as
preanalytic
A quality control value outside of an acceptable limit is an example of an error classified as
analytic
the term accuracy means
How close a test result is to the true value
The term control means
Specimen similar to patient’s blood; known concentration of constituent
The term precision means
how close results are to one another when repeatedly analyzed
The term sensitivity means
subjects with a specific disease or condition produce a positive result
The term specificity means
Subjects without a specific disease or condition produce a negative result
The type of error caused by omitting patient serum or reagent from a test mixture is a
false-negative error
The type of error caused by using dirty glassware is a
false-positive error
The type of error caused by the addition of the wrong reagent is a
false positive or false negative error
The type of error caused by inaccurately recording results is a
false positive or false negative error
The type of error caused by using hemolyzed patient serum is a
false positive error
in a written procedural protocol, the ___ should follow the name of the procedure and name of the test method
principle and purpose of the test
In a written procedural protocol, the ___ should follow the specimen collection and storage information
quality control
In a written procedural protocol, the ___ should follow the list of reagents, supplies, and equipment
procedural protocol
In a written procedural protocol, the ____ should follow the reference values and procedural notes
sources of error
If testing cannot be done within ___ hours of collection, a serum specimen should be frozen at -20 degrees celcius
72
Complement can be inactivated in human serum by heating to ___ degrees celcius
56
A specimen should be reinactivated when more than ___ hours have elapsed since inactivation
4
A graduated pipette can be used when
extreme accuracy is not needed
