NSG 535 Exam 3 (Lab Diagnostics) LATEST UPDATE

NSG 535 Exam 3 (Lab Diagnostics) LATEST
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UPDATE

gaussian distribution - CORRECT ANSWERS ✔✔usually the
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reference range for analytes is based on normal distribution (95%
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CV)
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all values are symmetrically distributed around the mean
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standard deviation - CORRECT ANSWERS ✔✔statistic that
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describes the variance or spread of a set of measurements about
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the mean
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larger the ____, the greater the variance
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% coefficient of variation - CORRECT ANSWERS ✔✔standard
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deviation / mean |\ |\




expressed as % |\ |\




measure of variability |\ |\




aim to have this LOW for lab tests
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, confidence intervals - CORRECT ANSWERS ✔✔limits in which we
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expect a specific proportion of a population to lie
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analytical sensitivity - CORRECT ANSWERS ✔✔ability of a test to
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detect a target analyte regardless of the amount present
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limit of detection
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analytical specificity - CORRECT ANSWERS ✔✔ability of a test to
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detect the intended analyte
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clinical sensitivity - CORRECT ANSWERS ✔✔assay's ability to
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correctly (positively) identify patients with disease
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clinical specificity - CORRECT ANSWERS ✔✔assay's ability to
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correctly identify a patient with the disease as negative
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predictive value - CORRECT ANSWERS ✔✔takes into account the
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prevalence of a certain disease in your specific area |\ |\ |\ |\ |\ |\ |\ |\




positive predictive value - CORRECT ANSWERS ✔✔likelihood that
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a patient has the associated disease given that the test result is
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positive


negative predictive value - CORRECT ANSWERS ✔✔likelihood that
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a patient does not have a disease given that the test result is
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negative