PHCH 667 Exam with Right Answers
Accuracy - ✅✅ mean, how close to actual value
Precision - ✅✅ Standard deviation, how close values are to each other
The most important key parameters of a qualitative test - ✅✅ reference values,
predictive values, specificity
The key parameters of a quantitative test - ✅✅ accuracy, reference values,
sensitivity
The reference range most acceptable for quantitative tests - ✅✅ within 95% of
the mean value
For quantitative tests, critical values typically are considered those that occur
where? - ✅✅ so far outside the reference range as to portend mortality
For a qualitative test, sensitivity is determined by - ✅✅ TP = TP/(TP + FN)
For a qualitative test, specificity is determined by - ✅✅ TN = TN/(TN + FP)
Predictive values for a negative qualitative test is best described as: - ✅✅ NPV =
TN/(TN + FN)
, Predictive values for a positive qualitative test is best described as: - ✅✅ PPV =
TP/(TP + FP)
Waiver of a test by Clinical Laboratory Improvement Amendments (CLIA)
indicates that the test is... - ✅✅ so simple and accurate that likelihood of error is
negligible and can be cleared by the FDA for home use
Which sample (specimen) has the longest window for being able to detect drug
use? - ✅✅ hair
When does LH surge occur relative to ovulation? - ✅✅ 30-36 hours before
ovulation
Which of the following stimulates promotes fertility in both men and women? -
✅✅ FSH test
Which OTC test can be used to detect pregnancy? - ✅✅ Human Chorionic
Gonadotropin (HCG) test
What is typically the soonest pregnancy can be detected using the HCG test? -
✅✅ 7-10 days after conception
What type of test is most often available OTC for a home pregnancy test? - ✅✅
immunochromatographic test (sandwich ELISA)
Which most likely interferes with a home pregnancy test? - ✅✅ FSH
Accuracy - ✅✅ mean, how close to actual value
Precision - ✅✅ Standard deviation, how close values are to each other
The most important key parameters of a qualitative test - ✅✅ reference values,
predictive values, specificity
The key parameters of a quantitative test - ✅✅ accuracy, reference values,
sensitivity
The reference range most acceptable for quantitative tests - ✅✅ within 95% of
the mean value
For quantitative tests, critical values typically are considered those that occur
where? - ✅✅ so far outside the reference range as to portend mortality
For a qualitative test, sensitivity is determined by - ✅✅ TP = TP/(TP + FN)
For a qualitative test, specificity is determined by - ✅✅ TN = TN/(TN + FP)
Predictive values for a negative qualitative test is best described as: - ✅✅ NPV =
TN/(TN + FN)
, Predictive values for a positive qualitative test is best described as: - ✅✅ PPV =
TP/(TP + FP)
Waiver of a test by Clinical Laboratory Improvement Amendments (CLIA)
indicates that the test is... - ✅✅ so simple and accurate that likelihood of error is
negligible and can be cleared by the FDA for home use
Which sample (specimen) has the longest window for being able to detect drug
use? - ✅✅ hair
When does LH surge occur relative to ovulation? - ✅✅ 30-36 hours before
ovulation
Which of the following stimulates promotes fertility in both men and women? -
✅✅ FSH test
Which OTC test can be used to detect pregnancy? - ✅✅ Human Chorionic
Gonadotropin (HCG) test
What is typically the soonest pregnancy can be detected using the HCG test? -
✅✅ 7-10 days after conception
What type of test is most often available OTC for a home pregnancy test? - ✅✅
immunochromatographic test (sandwich ELISA)
Which most likely interferes with a home pregnancy test? - ✅✅ FSH
