Clinical Chemistry Exam 1 Review – Questions With
Proper Solutions
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Terms in this set (108)
pre-analytical error sample collection, Identification, correct sample type,
examples
the probability of getting a sensitivity
True Positive test result
The extent to which accuracy
measurements agree with
the true value of the
quantity being measured
When data fluctuations are random error
due to chance and results
seem to vary in either
direction
2 consecutive control Westgard Rule 2 -2s
values exceed the mean by
more than 2 SD, but less
than 3SD.
A control has a range of 5 ---------SD of a range is (MAX- MIN) / 4
70-90 mg/dl. What is the
value of ONE standard
deviation?
You received a Westgard two consecutive points exceed 2sd and patient results
Rule 2-2s rule failure on should not be reported
your low control. This tells
you that:
A slow gradual increase or QC trend
decrease in the values
obtained for QC analysis
that continues for six or
more days is indicative of a:
, a sudden change of values from one level of the control
chart to another. A common cause of a shift is failure to
QC Shift
recalibrate when changing lot numbers of reagents
during an analytical run
An example of an analytical improper pipetting by the instrument's sampling probe
error is:
While monitoring a QC Age of reagent, or QC Material, or deterioration of the
program, the tech notices lamp on the instrument, or age of calibration
that the values of the
control samples have been
slowly drifting downward
during the week. What are
some likely causes of this
drift?
(the extent of agreement precision
between repeated
analyses) measurements
under the same conditions
show the same results.
Reproducibility
What percentage of results 95% = 2SD 97% 3SD
should fall within two
standard deviations of the
mean if the distribution is
considered normal? what is
the % for 3SD
comparing current results Delta checks
with results from previous
runs. If the difference is
greater than expected, an
analytical error could be
the cause or a change in
treatment.
Which of the following The longer the wavelength, the lower the energy
correctly states the
relationship between the
wavelength and the energy
of light?
Proper Solutions
Save
Terms in this set (108)
pre-analytical error sample collection, Identification, correct sample type,
examples
the probability of getting a sensitivity
True Positive test result
The extent to which accuracy
measurements agree with
the true value of the
quantity being measured
When data fluctuations are random error
due to chance and results
seem to vary in either
direction
2 consecutive control Westgard Rule 2 -2s
values exceed the mean by
more than 2 SD, but less
than 3SD.
A control has a range of 5 ---------SD of a range is (MAX- MIN) / 4
70-90 mg/dl. What is the
value of ONE standard
deviation?
You received a Westgard two consecutive points exceed 2sd and patient results
Rule 2-2s rule failure on should not be reported
your low control. This tells
you that:
A slow gradual increase or QC trend
decrease in the values
obtained for QC analysis
that continues for six or
more days is indicative of a:
, a sudden change of values from one level of the control
chart to another. A common cause of a shift is failure to
QC Shift
recalibrate when changing lot numbers of reagents
during an analytical run
An example of an analytical improper pipetting by the instrument's sampling probe
error is:
While monitoring a QC Age of reagent, or QC Material, or deterioration of the
program, the tech notices lamp on the instrument, or age of calibration
that the values of the
control samples have been
slowly drifting downward
during the week. What are
some likely causes of this
drift?
(the extent of agreement precision
between repeated
analyses) measurements
under the same conditions
show the same results.
Reproducibility
What percentage of results 95% = 2SD 97% 3SD
should fall within two
standard deviations of the
mean if the distribution is
considered normal? what is
the % for 3SD
comparing current results Delta checks
with results from previous
runs. If the difference is
greater than expected, an
analytical error could be
the cause or a change in
treatment.
Which of the following The longer the wavelength, the lower the energy
correctly states the
relationship between the
wavelength and the energy
of light?
