PHCH 667 Exam 1 Questions Answered Correctly Latest 2025-2026
accuracy - Answers mean, how close to actual value
precision - Answers Standard deviation, how close values are to each other
the most important key parameters of a QUALITATIVE test - Answers sensitivity, specificity,
predictive value, accuracy
the key parameters of a QUANTITATIVE test - Answers accuracy, precision, reference values,
critical values
The reference range most acceptable for quantitative tests - Answers within 95% of the mean
value
for quantitative tests, critical values typically are considered those that occur where? - Answers
so far outside the reference range as to portend mortality
for a qualitative test, sensitivity is determined by - Answers TP = TP/(TP + FN)
for a qualitative test, specificity is determined by - Answers TN = TN/(TN + FP)
predictive values for a negative qualitative test is best described as: - Answers NPV = TN/(TN +
FN)
predictive values for a positive qualitative test is best described as: - Answers PPV = TP/(TP +
FP)
Waiver of a test by Clinical Laboratory Improvement Amendments (CLIA) indicates that the test
is... - Answers 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? - Answers
hair
when does LH surge occur relative to ovulation? - Answers 30-36 hours before ovulation
which of the following stimulates promotes fertility in both men and women? - Answers FSH
test
which OTC test can be used to detect pregnancy? - Answers Human Chorionic Gonadotropin
(HCG) test
what is typically the soonest pregnancy can be detected using the HCG test? - Answers 7-10
days after conception
what type of test is most often available OTC for a home pregnancy test? - Answers
immunochromatographic test (sandwich ELISA)
accuracy - Answers mean, how close to actual value
precision - Answers Standard deviation, how close values are to each other
the most important key parameters of a QUALITATIVE test - Answers sensitivity, specificity,
predictive value, accuracy
the key parameters of a QUANTITATIVE test - Answers accuracy, precision, reference values,
critical values
The reference range most acceptable for quantitative tests - Answers within 95% of the mean
value
for quantitative tests, critical values typically are considered those that occur where? - Answers
so far outside the reference range as to portend mortality
for a qualitative test, sensitivity is determined by - Answers TP = TP/(TP + FN)
for a qualitative test, specificity is determined by - Answers TN = TN/(TN + FP)
predictive values for a negative qualitative test is best described as: - Answers NPV = TN/(TN +
FN)
predictive values for a positive qualitative test is best described as: - Answers PPV = TP/(TP +
FP)
Waiver of a test by Clinical Laboratory Improvement Amendments (CLIA) indicates that the test
is... - Answers 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? - Answers
hair
when does LH surge occur relative to ovulation? - Answers 30-36 hours before ovulation
which of the following stimulates promotes fertility in both men and women? - Answers FSH
test
which OTC test can be used to detect pregnancy? - Answers Human Chorionic Gonadotropin
(HCG) test
what is typically the soonest pregnancy can be detected using the HCG test? - Answers 7-10
days after conception
what type of test is most often available OTC for a home pregnancy test? - Answers
immunochromatographic test (sandwich ELISA)
