Clinical Chemistry

Error where there is continued difference between test and comparative method values

Error where difference between test and comparative method values are proportional to analyte concentrate

Deterioration of reagents is a problem encountered in what phase of clinical analysis

Ratio of WARNING to MANDATORY Westgard rules

QC Chart that demonstrates the Westgard Multirules

Most widely used QC Chart in the clinical laboratory

QC Chart used to compare results of different laboratories

Plot that gives the earliest indication of trend

Closeness of measured value to the true value

An ability to give repeated results on the same sample that agree with one another

Measures of the diagnostic accuracy of the a test

Relates to the lowest concentration of a substance that can be detected in a test system

Ability to detect only the desired chemical with no interference from other chemicals

Ability to detect the presence of disease

Indicates the ability of the test to generate more true POSITIVE and few false negative results

Reflects the ability of the method to detect true NEGATIVE with very few false positive

Indicates the number of patients with an abnormal test result who HAVE the disease

PPV Formula

Indicates the number of patients with a normal test result who DO NOT HAVE the disease

NPV Formula

Part (s) of descriptive statistics

Measures of dispersion

The lower the CV, the _________ the precision

The average of the given set of values