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Which of the following clinical signs indicates that a person is choking and has complete airway
obstruction?
A) Coughing or gagging
B) Noisy or painful breathing
C) No chest movement
D) Inability to speak
E) Decreased level of consciousness Correct Ans-C) No chest movement
The laboratory assistant/technician must wear gloves to do all of the following, EXCEPT:
A) handle clinical specimens.
B) handle human tissue specimens.
с) engage in procedures that involve direct skin contact with biological specimens.
D) process clinical specimens.
E) perform phlebotomies. Correct Ans-E) perform phlebotomies.
,Which risk is NOT associated with the following WHMIS symbol?
A) May cause environmental damage from fumes
B) May react with water
C) May be chemically unstable
D) May burn unexpectedly
E) May explode if exposed to shock or heat Correct Ans-A) May cause environmental damage
from fumes
Which hazard is matched to the hazard symbol below?
A) May cause permant injury or death
в) May release toxic vapours
C) May react with water
D) May ignite spontaneously
E) Includes fluids containing toxic products Correct Ans-A) May cause permant injury or
death
,Where there is risk of aerosol production, Level 2 containment requires a minimum of:
A) Level 1 biosafety cabinet.
B) Level 2 biosafety cabinet
C) Level 3 biosafety cabinet
D) Laminar flow hood
E) No special hood required Correct Ans-A) Level 1 biosafety cabinet.
According to the Clinical and Laboratory Standards Institute (CLSI) which type of water should
be used for routine laboratory assays?
A) Filtered water
B) Distilled water
C) De-ionized water
D) Double distilled water (DDH,O)
E) Clinical Laboratory Reagent Water (CLRW) Correct Ans-E) Clinical Laboratory Reagent
Water (CLRW)
An error was made in preparing a commercial control. Patients results will be:
, A) inaccurate.
B) imprecise.
C) inaccurate but precise.
D) accurate but imprecise
E) not affected. Correct Ans-E) not affected.
What are the upper and lower limits of acceptable results for a control, if the mean is 130 g/L and
the standard deviation is 2.0?
A) 122-138 g/L
B) 123-137 g/L
C) 124-136 g/L
D) 125-135 g/L
E) 126-134 g/L Correct Ans-E) 126-134 g/L
The term 'bias' is defined as: