dic gab cont Flashcards
closeness assayed values to trye value
accuracy
nearness to eac ither
precision
maintain accuracy nad prevision over periodnof rime
reliability
method can easily be repeated
practicability
measure the smallest concentration of analyte
anal. sensitivity
only analyte of interest
analytical specificity
linearity/ range that can be reported(verify accuray)
reposrtable range
normal value, vary in population, min 120 HEALTHY SUBJECTS,
if verify :20
reference interval
120 subjects: establish
40 verification
transference/establish ref interval
% pop with dse that test positive
diagnostic
diagnostic sensitive:
screening
rule out
disgnostic specificity
confirmatiry test
rule in
example syphilis
rprvdrl: sensi
ftabs: apecificity
% of time that a positive result is corrected
positive pred. value
% of rime a neg result is correct
neg predictive value
quality control assayed on ______
regular/daily basis
generally, _____ differentbconcen.
control:(normal and abnornal)
two
new instrument or new reagent, test control for ____days
20
in 20 days: 20 results is used to computes
sd and mean
most common evaluate qc result: also called
levey jenning/shewart
6 consec. neither inc. or dec
trend
cause: deterio. of reagent
6 consec. on one side
shift
improper calibration
higky devuating outside
outliers
warning rule
12s
present in all measurements, associated with 123, 13s, r4s, bidirectional
random
eztwrnal quality assessment
prof testing
conpare now with past result
delta check
faild delta check
greater than 20% deviation
20% icrease in deviation
failed dlta check
goal: wlimicmte variation or reduce error
sidmx sigma
answe q: how can process be improved
elimite waste
lean
does this step need to exist
process improvment
best would be six sigma
