MLS 220 Exam 1 Questions with
correct Answers
1:10 or 1:100 bleach solutions are a common disinfectant in laboratories. How often
should these bleach solutions be remade in order to ensure their chlorine levels
remain adequate?
a. Hourly
b. Daily
c. Weekly
d. Monthly - ------------ANSWER: c. Weekly
A 50 mL volume being held in an Erlenmeyer flask with a tolerance of 0.05 mL is
actually more accurately described as :
a. 45 mL - 55 mL
b. 49.95 mL - 50.05 mL
c. 50 mL - 50.05 mL
d. 49.5 mL - 50.5 mL - ------------ANSWER: b. 49.95 mL - 50.05 mL
A chemical inventory, safety data sheets, labeling requirements, engineering
controls, and waste removal and disposal are all a part of what OSHA mandate?
a. Chemical Hygiene Plan
b. Blood Borne Pathogen Plan
c. Core Standards
d. Hazard Communication Standards - ------------ANSWER: a. Chemical Hygiene
Plan
A class C fire is a fire caused by:
a. Electrical equipment
b. Flammable liquid and gases
c. Ordinary combustibles
d. A class C fire cannot be extinguished - ------------ANSWER: a. Electrical
equipment
A collection of tests ordered at the same time and under a single order is known as
a(n):
a. Analyte
,b. Test Selection
c. Test Panel
d. Testing Algorithm - ------------ANSWER: c. Test Panel
A graphical representation of known standard or calibrator points is known as a
__________?
a. Expected Value
b. Standard/Calibration Curve
c. Reference Range
d. Calibration Interval - ------------ANSWER: b. Standard/Calibration Curve
A laboratory test that is not performed in-house, but is delivered to a different
laboratory to be performed, often due to its complexity, is known as a:
a. send out
b. reference test
c. routine test
e. mailed test - ------------ANSWER: a. send out
A laboratory that handles microorganisms that present moderate hazards to
laboratory staff and environment, including Staphylococcus aureus or Zika virus,
would be assigned which of the following biosafety levels:
a. BSL-1
b. BSL-2
c. BSL-3
d. BLS-4 - ------------ANSWER: b. BSL-2
A new trend in laboratory organization is what is known as the Core Laboratory. This
department generally consists of the following departments:
a. Hemostasis (Coagulation) and Urinalysis
b. Microbiology and Immunohematology
c. Hematology, Microbiology, Clinical Chemistry, Immunohematology
d. Hematology, Hemostasis (Coagulation), Chemistry, and Urinalysis -
------------ANSWER: d. Hematology, Hemostasis (Coagulation), Chemistry, and
Urinalysis
A piece of laboratory glassware is marked with a "TC" on its stem. This means that
the piece of glassware is:
, a. Calibrated to hold a specific volume of liquid
b. Calibrated to hold and disperse a specific volume of liquid
c. Calibrated to disperse a specific volume of liquid
d. Not calibrated - ------------ANSWER: a. Calibrated to hold a specific volume of
liquid
A purchased material with a known quantitative range of values (or qualitative value)
that is used to confirm the accuracy of a test is known as (a) ________:
a. Patient Sample
b. Calibrator
c. Quality Control
d. Proficiency Test - ------------ANSWER: c. Quality Control
A purchased material with known quantitative or qualitative values that is used to
correlate the results of an analyzer to check the analyzer's accuracy is known as (a)
_____:
a. Calibrator
b. Quality Control
c. Patient Sample
d. Proficiency Test - ------------ANSWER: a. Calibrator
A substance or mixture for use as a component in chemical analysis or other
reactions is also known as a _______:
a. Reagent
b. Chemical
c. Calibrator
d. Control - ------------ANSWER: a. Reagent
A waived test is:
a. A simple test cleared by the FDA that has an extremely low likelihood of an
erroneous result
b. A test that is so easy a caveman could do it
c. A test that, according to CLIA 88, must be performed by a Medical Laboratory
Science
correct Answers
1:10 or 1:100 bleach solutions are a common disinfectant in laboratories. How often
should these bleach solutions be remade in order to ensure their chlorine levels
remain adequate?
a. Hourly
b. Daily
c. Weekly
d. Monthly - ------------ANSWER: c. Weekly
A 50 mL volume being held in an Erlenmeyer flask with a tolerance of 0.05 mL is
actually more accurately described as :
a. 45 mL - 55 mL
b. 49.95 mL - 50.05 mL
c. 50 mL - 50.05 mL
d. 49.5 mL - 50.5 mL - ------------ANSWER: b. 49.95 mL - 50.05 mL
A chemical inventory, safety data sheets, labeling requirements, engineering
controls, and waste removal and disposal are all a part of what OSHA mandate?
a. Chemical Hygiene Plan
b. Blood Borne Pathogen Plan
c. Core Standards
d. Hazard Communication Standards - ------------ANSWER: a. Chemical Hygiene
Plan
A class C fire is a fire caused by:
a. Electrical equipment
b. Flammable liquid and gases
c. Ordinary combustibles
d. A class C fire cannot be extinguished - ------------ANSWER: a. Electrical
equipment
A collection of tests ordered at the same time and under a single order is known as
a(n):
a. Analyte
,b. Test Selection
c. Test Panel
d. Testing Algorithm - ------------ANSWER: c. Test Panel
A graphical representation of known standard or calibrator points is known as a
__________?
a. Expected Value
b. Standard/Calibration Curve
c. Reference Range
d. Calibration Interval - ------------ANSWER: b. Standard/Calibration Curve
A laboratory test that is not performed in-house, but is delivered to a different
laboratory to be performed, often due to its complexity, is known as a:
a. send out
b. reference test
c. routine test
e. mailed test - ------------ANSWER: a. send out
A laboratory that handles microorganisms that present moderate hazards to
laboratory staff and environment, including Staphylococcus aureus or Zika virus,
would be assigned which of the following biosafety levels:
a. BSL-1
b. BSL-2
c. BSL-3
d. BLS-4 - ------------ANSWER: b. BSL-2
A new trend in laboratory organization is what is known as the Core Laboratory. This
department generally consists of the following departments:
a. Hemostasis (Coagulation) and Urinalysis
b. Microbiology and Immunohematology
c. Hematology, Microbiology, Clinical Chemistry, Immunohematology
d. Hematology, Hemostasis (Coagulation), Chemistry, and Urinalysis -
------------ANSWER: d. Hematology, Hemostasis (Coagulation), Chemistry, and
Urinalysis
A piece of laboratory glassware is marked with a "TC" on its stem. This means that
the piece of glassware is:
, a. Calibrated to hold a specific volume of liquid
b. Calibrated to hold and disperse a specific volume of liquid
c. Calibrated to disperse a specific volume of liquid
d. Not calibrated - ------------ANSWER: a. Calibrated to hold a specific volume of
liquid
A purchased material with a known quantitative range of values (or qualitative value)
that is used to confirm the accuracy of a test is known as (a) ________:
a. Patient Sample
b. Calibrator
c. Quality Control
d. Proficiency Test - ------------ANSWER: c. Quality Control
A purchased material with known quantitative or qualitative values that is used to
correlate the results of an analyzer to check the analyzer's accuracy is known as (a)
_____:
a. Calibrator
b. Quality Control
c. Patient Sample
d. Proficiency Test - ------------ANSWER: a. Calibrator
A substance or mixture for use as a component in chemical analysis or other
reactions is also known as a _______:
a. Reagent
b. Chemical
c. Calibrator
d. Control - ------------ANSWER: a. Reagent
A waived test is:
a. A simple test cleared by the FDA that has an extremely low likelihood of an
erroneous result
b. A test that is so easy a caveman could do it
c. A test that, according to CLIA 88, must be performed by a Medical Laboratory
Science
