CLINICAL CHEMISTRY Flashcards
Number of moles of solute per liter of solution
Molarity
Number of moles of solute per kilogram of solvent
Molality
Number of equivalent weights of solute per liter of solution
Normality
Amount of solute per 100 total units of solution
%w/v
Expression of relative concentration
Dilution
Volume of sample divided by total volume of solution
Simple dilution
The amount of something relative to another ; expressed as part per part or part per whole
Ratio
Formula for dilution?
Result x dillution factor
Sample volume divided by total volume
Average or arithmetic mean
Mean
midpoint of a data set after the values have been rank-ordered
Median
most frequently occurring value in a data set
Mode
distribution of data points around the mean
standard deviation
best indicator of precision
coefficient of variation
difference between the highest and the lowest values
range
what is the relationship between precision and coefficient of variation
inversely proportional
rule of thumb of coefficient of variation
must be <10%
It is not reliable or is greatly affected by outliers
range
empirical rule for gaussian/normal distribution
68/95/99.7
done to confirm the validity of an existing or published reference interval for an analyte ?
aka as?
It requires ______ study individuals and reference interval is adopted if ____% of the subjects fall outside the range
Verifying a reference interval
Transference
20
< or equal to 10
done when there is no existing RI for an analyte or when transference study fails
requires at least ____ study individuals
RI is set based on the ______
Establishing a reference interval
120
95% confidence interval
formula for confidence interval of 95%
mean pus minus 2SD
