QA AND QC
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process by which lab ensures quality results a. Quality assurance b. auatlity control
QA -process by which lab ensures quality results by closely monitoring preanalytical, analytical and post analytical
process of monitoring results from control samples to verify accuracy of patient results a. QA b. QC
quality control • part of analytical phase of QA • process of monitoring results from control samples to verify accuracy of patient results
measure the central tendency a. mean b. median c. mode d. range
mean - measure the central tendency
most frequent observation a. mean b. median c. mode d. range
mode - most frequent observation
easiest measure of spread a. mean b. median c. mode d. range
range • difference between highest and lowest value • easiest measure of spread
most frequently used measure of variation a. SD b. CV c. T-test d. F- test
standard deviation (SD) - most frequently used measure of variation
an index of precision used to compare the dispersion of two or more groups of data with different units/ concentration a. SD b. CV c. T-test d. F- test
coeffecient of variation (CV) • index of precision • used to compare the dispersion of 2 or more groups of data
used to determine if there is a significant difference between the means of 2 groups of data a. SD b. CV c. T-test d. F- test
T-test - difference between the means of 2 groups of data Means - T test (MT) SD - f test (FS)
used to determine if there is a significant difference between the SD of 2 groups of data a. SD b. CV c. T-test d. F- test
T-test - difference between the means of 2 groups of data F- tests - difference between the SD of 2 groups of data Means - T test (MT) SD - f test (FS)
measure of central tendency a. mean b, median c, mode d. sd
central tendency mean. median mode spread dispersion range, Sd , CV
nearness or closeness of assayed value s to the true value a. accuracy b. precision c. reliability d. practibility
accuracy - nearness or closeness to the TRUE VALUE precision - nearness or closeness to EACH OTHER
ability of analytical method to maintain accuracy and precision over an extended period of time a. accuracy b. precision c. reliability d. practibility
reliability - to maintain accuracy and precision over an EXTENDED PERIOD OF TIME
ability to measure the smallest concentration of the analyte of interest a. analytical sensitivity b. analytical specificity c. reportable range d. practicability
analytical sensitivity - measure the SMALLEST concentration
ability to measure only the analyte of interest a. analytical sensitivity b. analytical specificity c. reportable range d. practicability
analytical specificity - measure ONLY the analyte of interest
verifying a reference interval can required as few as ______ individuals a. 10 b. 20 c. 30 d. 5
verifying a reference interval can required as few as 20 study individuals