EDITION 2026 TEST BANK COMPLETE GUIDE
ALL CHAPTERS 1-20 VERIFIED SOLUTIONS
◉ For a qualitative test, sensitivity is determined by.... Answer: The
number of true positives divided by all results that should have been
positive
◉ Predictive value for a negative qualitative test. Answer: NPV =
TN/(TN+FN)
◉ NPV is best described as.... Answer: The number of true negative
values divided by all observed negative values
◉ Precision is viewed as what statistic in clinical chemistry?.
Answer: Standard deviation
◉ Accuracy is viewed as what statistic in clinical chemistry?.
Answer: Mean
◉ Specificity equation. Answer: TN/(TN+FP)
,◉ For a qualitative test, specificity is determined by.... Answer: The
number of true negatives divided by all results that should have
been negative
◉ What are the key parameters for a qualitative test?. Answer:
Specificity, sensitivity, predictive value, and accuracy
◉ What are the key parameters for quantitative test?. Answer:
Accuracy, precision, reference range, and critical values
◉ Ion-selective electrodes (ISE) can be used to measure analytes
including.... Answer: pH, Na, Cl, CO2, K
◉ (T/F) Hospital/clinical laboratories tend to have a higher degree
of automation to handle high volumes of samples, whereas point-of-
care labs focus on convenience and immediate results.. Answer: True
◉ (T/F) Fluorescence emission light wavelength is longer than
excitation light wavelengths.. Answer: True
◉ Which type of patient information do clinical laboratory tests
typically provide to the physician?. Answer: Objective and
personalized patient information
,◉ What is a homogenous immunoassay that does not require
separation of bound antigen from unbound antigen during the
assay?. Answer: EMIT
◉ What is an amount of enzyme that catalyze the conversation of
one micromole of substrate in 1 minute?. Answer: International unit
◉ Enzyme-based clinical assays can measure what two things?.
Answer: Endogenous enzymes and endogenous substrates
◉ UV/Visible absorbance assays rely on what to determine the
concentration of an analyte in solution or samples?. Answer: The
Beer-Lambert Law
◉ What does nephelometry measure?. Answer: It measures the
scatter of light by particles (light scattering of the sample/the
stability of the sample)
◉ What does refractometry measure?. Answer: Light bending as it
passes through different media
◉ Why is LC/MS more selective than LC/UV?. Answer: MS can
determine molecular weight, detect novel substances, and has high
mass accuracy.
, ◉ What type of test is most often available over the counter for
home pregnancy test?. Answer: Immunochromatographic assay
◉ What hormone is most likely to interfere with a home pregnancy
test?. Answer: Follicle stimulating hormone (FSH)
◉ Waiver of a test by Clinical Laboratory Improvement Amendments
(CLIA) indicates that the test is.... Answer: So simple and accurate to
render the likely of error negligible and can be cleared by the FDA
for home use
◉ What is typically the soonest pregnancy can be detected using the
human chorionic gonadotropin (hCG) test?. Answer: 7 to 10 days
after conception
◉ Which hormone stimulates/promotes fertility in both men and
women?. Answer: Follicle stimulating hormone (FSH)
◉ Which sample (specimen) has the longest window for being able
to detect drug use?. Answer: Hair
◉ Fractional excretion of sodium uses a measure of sodium present
in urine and it is calculated based on the relative levels of what else
in urine?. Answer: Creatinine