What agency approves new test methodologies, instruments, and reagents before they
are available for purchase by consumers? - ANS-FDA
How often should biological safety hoods be inspected? - ANS-Annually
What is the minimum number of standards required for a standard curve? - ANS-3
What is the maximum magnification using a brightfield microscope? - ANS-1000X
What is the most accurate pipette for reconstituting control material? - ANS-Glass
volumetric pipettes
Which unit of measure refers to 10^-3? - ANS-Milli-
What is the calculated cholesterol/HDL ratio given the following results?
Cholesterol 225 mg/dL
HDL 75 mg/dL - ANS-225/75= 3.00
200 microliters of patient serum is diluted with 800 microliters of saline. What is the final
dilution? - ANS-1:5
What is the calculated LDL cholesterol given the following lipid profile results?
Triglycerides 190 mg/dL
Cholesterol 225 mg/dL
HDL 75 mg/dL - ANS-LDL = Total cholesterol - HDL - (TG/5)
112 = 225 - 75 - (190/5)
How is relative centrifugal force calculated? - ANS-1.18 x 10^-5 x r x rpm^2
A chain of custody is required for all of the following: - ANS-Legal blood alcohol,
pre-employment drug screen, and paternity testing
A chain of custody is required for all of the following, EXCEPT: - ANS-Fetal fibronectin
What federal legislation regulates most clinical laboratories? - ANS-Clinical Laboratory
Improvement Amendments (CLIA)
, What is the level of complexity of most testing performed in clinical laboratories? -
ANS-Moderately complex
How often does CLIA require clinical laboratories to have inspections? - ANS-Every 2
years
Which laboratories are NOT required to participate in proficiency testing? -
ANS-Laboratories performing waived testing only.
Which proficiency testing (PT) results do not meet the CLIA performance criteria? -
ANS-Failed the same analyte in two consecutive PT events
Which one of the following is an example of alternate proficiency testing? - ANS-Split
samples sent to another facility using the same test method.
All of the following are pre-analytical errors except which one? - ANS-Transcription error
entering a manual result
All of the following are pre-analytical erros: - ANS-Ordering a lab test under the wrong
patient number, misidentification of a patient, mislabeling an add-on test
Which one of the following is the most common analytical error? - ANS-Not checking
specimen integrity
What is the most common post-analytical error? - ANS-Clerical errors
How often must a procedure be reviewed? - ANS-Annual review is required
How often must thermometers be checked against the NIST thermometer? -
ANS-Annually
In which manual are the directions for running quality control for a specific assay kept? -
ANS-Operating procedure manual
Following equipment maintenance, when is quality control suggested? - ANS-After any
preventative maintenance
What is the most common reason for a control value to be outside of 3SD? -
ANS-Random error
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