Clinical Chemistry Exam #2 with correct answers 2024
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Course
Clinical Chemistry Ex
Institution
Clinical Chemistry Ex
The Clinical and Laboratory Standards Institute's (CLSI) guideline states that a laboratory must test twenty 'normal' individuals in order to verify a valid reference interval from a test package insert. correct answers 90%
The results of a certain type of quantity obtained from a single indivi...
The Clinical and Laboratory Standards Institute's (CLSI) guideline states that a
laboratory must test twenty 'normal' individuals in order to verify a valid reference
interval from a test package insert. correct answers 90%
The results of a certain type of quantity obtained from a single individual or group of
individuals corresponding to a stated description is the definition of correct answers
Reference values
Calculate the clinical sensitivity for the following data: in a group of 80 patients
diagnosed with sickle cell disease, 72 had positive test results. The clinical sensitivity of
this test is correct answers 72/(72+8) *100 = 90%
Visually inspecting the distribution of reference values can provide a safeguard against
misinterpretation of statistical methods, and it may provide valuable information about
the data. Which of the following observations might represent erroneous values?
correct answers Outlier values
Even if somewhat impractical, which one of the following preanalytical factors should be
standardized when establishing a reference interval for an analyte? correct answers
The method of specimen collection
An important assumption that is made when using parametric methods to estimate
percentiles and their confidence intervals in determining reference limits is that correct
answers the true distribution that the reference values exhibit is Gaussian
Which one of the following is an example of an exclusion criterion when establishing a
healthy population-based reference interval? correct answers Use of oral
contraceptives
True negatives ÷ (false positives + true negatives) × 100 is the formula for determining
correct answers Clinical specificity
What type of liquid chromatography uses a nonpolar stationary phase? correct answers
reversed-phase chromatography
What mode of separation is used to separate solute molecules on the basis of size and
shape? correct answers steric exclusion
The solvent is what part of a think layer chromatography system? correct answers the
mobile phase
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