CLINICAL CHEMISTRY AND
MOLECULAR DIAGNOSTICS EXAM
QUESTIONS WITH VERIFIED ANSWERS
[ GRADED A+ ]
©Morren 2024/2025. Year published 2024.
true negatives / (false positives + true negatives) is the formula for
determining: - ✔✔specificity
The proportion of a population that has the particular disease being
studied is referred to as the: - ✔✔Prevalence
What is the positive predictive value of a test in which 220 individuals
with positive test results actually have the disease and 45 individuals
with positive test rates do not have the disease? - ✔✔83%.
220/(220+45)
, In regard to the number of true-positive and negative, and false-
positive and negative, results in laboratory testing the prevalence times
the sensitivity is equal to the number of: - ✔✔True positives
Calculate the sensitivity for the following data: in a group of 80 patients
diagnosed with sickle cell disease, 72 tested positively for it. The
sensitivity of this test is: - ✔✔72/(72+8) * 100 = 90%
A receiver operating characteristic (ROC) curve is a plot of: - ✔✔True
positives versus false positives
ROC curves are most useful in assessing the performance of
quantitative laboratory analysis because: - ✔✔They can display
performance of tests over the entire range of decision values
A laboratory analysis that produces quantitative results with an infinite
number of sensitivity and specificity pairs is referred to as a _________
test. - ✔✔Continuous
MOLECULAR DIAGNOSTICS EXAM
QUESTIONS WITH VERIFIED ANSWERS
[ GRADED A+ ]
©Morren 2024/2025. Year published 2024.
true negatives / (false positives + true negatives) is the formula for
determining: - ✔✔specificity
The proportion of a population that has the particular disease being
studied is referred to as the: - ✔✔Prevalence
What is the positive predictive value of a test in which 220 individuals
with positive test results actually have the disease and 45 individuals
with positive test rates do not have the disease? - ✔✔83%.
220/(220+45)
, In regard to the number of true-positive and negative, and false-
positive and negative, results in laboratory testing the prevalence times
the sensitivity is equal to the number of: - ✔✔True positives
Calculate the sensitivity for the following data: in a group of 80 patients
diagnosed with sickle cell disease, 72 tested positively for it. The
sensitivity of this test is: - ✔✔72/(72+8) * 100 = 90%
A receiver operating characteristic (ROC) curve is a plot of: - ✔✔True
positives versus false positives
ROC curves are most useful in assessing the performance of
quantitative laboratory analysis because: - ✔✔They can display
performance of tests over the entire range of decision values
A laboratory analysis that produces quantitative results with an infinite
number of sensitivity and specificity pairs is referred to as a _________
test. - ✔✔Continuous
