Actual Exam Questions and CORRECT
Answers
What agency approves new test methodologies, instruments, and reagents before they are
available for purchase by consumers? - CORRECT ANSWER- ✔✔FDA
How often should biological safety hoods be inspected? - CORRECT ANSWER-
✔✔Annually
What is the minimum number of standards required for a standard curve? - CORRECT
ANSWER- ✔✔3
What is the maximum magnification using a brightfield microscope? - CORRECT
ANSWER- ✔✔1000X
What is the most accurate pipette for reconstituting control material? - CORRECT
ANSWER- ✔✔Glass volumetric pipettes
Which unit of measure refers to 10^-3? - CORRECT ANSWER- ✔✔Milli-
What is the calculated cholesterol/HDL ratio given the following results?
Cholesterol 225 mg/dL
HDL 75 mg/dL - CORRECT ANSWER- ✔✔225/75= 3.00
200 microliters of patient serum is diluted with 800 microliters of saline. What is the final
dilution? - CORRECT ANSWER- ✔✔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 - CORRECT ANSWER- ✔✔LDL = Total cholesterol - HDL - (TG/5)
112 = 225 - 75 - (190/5)
How is relative centrifugal force calculated? - CORRECT ANSWER- ✔✔1.18 x 10^-5 x r x
rpm^2
A chain of custody is required for all of the following: - CORRECT ANSWER- ✔✔Legal
blood alcohol, pre-employment drug screen, and paternity testing
A chain of custody is required for all of the following, EXCEPT: - CORRECT ANSWER-
✔✔Fetal fibronectin
What federal legislation regulates most clinical laboratories? - CORRECT ANSWER-
✔✔Clinical Laboratory Improvement Amendments (CLIA)
What is the level of complexity of most testing performed in clinical laboratories? -
CORRECT ANSWER- ✔✔Moderately complex
How often does CLIA require clinical laboratories to have inspections? - CORRECT
ANSWER- ✔✔Every 2 years
Which laboratories are NOT required to participate in proficiency testing? - CORRECT
ANSWER- ✔✔Laboratories performing waived testing only.
Which proficiency testing (PT) results do not meet the CLIA performance criteria? -
CORRECT ANSWER- ✔✔Failed the same analyte in two consecutive PT events
Which one of the following is an example of alternate proficiency testing? - CORRECT
ANSWER- ✔✔Split samples sent to another facility using the same test method.
All of the following are pre-analytical errors except which one? - CORRECT ANSWER-
✔✔Transcription error entering a manual result