correct answers graded A+
A graphical presentation of run to run or day to day quality control values is a
Select one:
a. Levey-Jennings chart.
b. systematic flow chart.
c. westgard chart.
d. lawson chart. - correct answer ✔✔Levey-Jennings chart
An abrupt demonstrated change in the mean is a
Select one:
a. shift.
b. trend.
c. variance.
d. deviation. - correct answer ✔✔shift
Qualitative examinations are those that
a. qualify for waived testing.
b. produce non-numerical results.
c. do not require quality control.
d. do not require proficiency testing - correct answer ✔✔produce non-numerical results
What characteristics/functions do calibrators have?
a. They contain a known amount of analyte being tested.
b. They monitor the quality of reagents.
c. They monitor the quality of the sample.
,d. They prevent equipment failure. - correct answer ✔✔They contain a known amount of analyte being
tested
Established measures used to determine how well an organization meets needs and
operational performance expectations is referred to as
Select one:
a. quality indicators.
b. quality assurance.
c. process controls.
d. quality control. - correct answer ✔✔quality indicators
A phrase used to describe the location where testing is performed (such as the bedside) is
known as
Select one:
a. point of care testing.
b. bedside remote testing.
c. physician performed testing.
d. waived testing. - correct answer ✔✔point of care testing
Under CLIA law, the assaying of materials of known concentration in the same manner as
patient samples to substantiate the instrument or test system's calibration throughout the
reportable range for the patient test results is
Select one:
a. calibration.
b. calibration verification.
c. a challenge.
d. quality control. - correct answer ✔✔calibration verification
What agency determines the complexity of a lab test system?
,Select one:
a. CMS
b. FDA
c. CDC
d. OSHA - correct answer ✔✔FDA
The FDA Modernization Act of 1997 amended CLIA 1988's criteria for waived testing to state
that
Select one:
a. an associate degree is required for testing.
b. tests performed at home must be approved by the state.
c. the procedures perform methodologies that are so simple to perform and accurate as
to render the likelihood of erroneous results by the user negligible.
d. all operators must be licensed in their states. - correct answer ✔✔the procedures perform
methodologies that are so simple to perform and accurate as
Devices based on electrophoretic principles are used in the clinical laboratory to perform all of
the following except to
Select one:
a. measure quantities of various proteins in plasma, urine, and CSF.
b. separate enzymes into their component isoenzymes.
c. identify antibodies.
d. measure molecules in a characteristic spectrum called the emission spectrum. - correct answer
✔✔measure molecules in a characteristic spectrum called the emission spectrum.
Given %T, how is absorbance calculated?
Select one:
a. log %T - 2.
b. log %T + 2.
, c. 2 + log %T.
d. 2 - log %T. - correct answer ✔✔2 - log %T
The chemistry methodology that is based on the fact that substances of clinical interest selectively
absorb or emit electromagnetic energy at different wavelengths is
Select one:
a. flourometry.
b. atomic absorption.
c. spectrophotometry.
d. photometry. - correct answer ✔✔spectrophotometry
Which of the following electrophoresis support materials separates proteins on the basis of charge and
molecular size?
Select one:
a. Cellulose acetate
b. Agarose gel
c. Polyacrylamide gel
d. Starch gel - correct answer ✔✔Agarose gel
In order for a laboratory to handle TB sputum and TB materials, the laboratory must operate
at a
Select one:
a. biosafety level of 2+ or 3.
b. biosafety level 4.
c. location where air exchange is continuous.
d. location where fume hood exhausts are monitored daily. - correct answer ✔✔biosafety level of 2+ or
3
Prohibiting mouth pipetting is an example of
Select one: