Deck 41: Assisting in the Clinical Laboratory

Question 1

Aerosolization in a centrifuge can be prevented by ensuring that

A) the tubes have an equal amount of fluid.
B) the atmosphere has 5% carbon dioxide.
C) the tubes are tightly capped.
D) rubber cups are in the bottom of the carriers.

Answer 1

the tubes are tightly capped.

Question 2

The clinical chemistry department performs which of the following tests?

A) Presence of ketones in urine
B) Cell morphology
C) Blood cell count
D) Lipid profile

Answer 2

Lipid profile

Question 3

The pledge of healthcare professionals to work to achieve the highest degree of excellence in the care given to every patient is otherwise known as

A) chain of custody.
B) quality assurance.
C) quality control.
D) incident reporting.

Answer 3

quality assurance.

Question 4

Laboratory tests performed in a physician's office are most likely to be categorized as CLIA-

A) waived.
B) moderate complexity.
C) high complexity.
D) A and B

Question 5

A portion of a well-mixed sample that is removed for testing is called a(n)

A) aliquot.
B) analyte.
C) diluent.
D) exudate.

Question 6

Categories of tests performed in the clinical laboratory are assigned by the FDA on the basis of the

A) potential risk to public health.
B) expense to the patient.
C) ease of performance.
D) instrumentation and supplies needed.

Question 7

Which of the following is not a responsibility of the medical assistant in the clinical laboratory?

A) Providing proper patient preparation
B) Interpreting abnormal results and providing patients with diagnoses
C) Developing a knowledge of analyte normal range of results
D) Obtaining and labeling specimens

Question 8

Which of the following is not a CLIA-waived test?

A) Dipstick urinalysis
B) Fecal occult blood
C) Gram's staining
D) Spun microhematocrit

Question 9

Balancing a centrifuge requires that all tubes in the load

A) have about the same volume of liquid in each tube.
B) are of equal size and shape.
C) have a partner directly across in the rotor holder.
D) All of the above

Question 10

Which of the following is a qualitative laboratory test result?

A) RBCs: 6,000,000/mm³
B) Fecal occult blood test: positive
C) Hematocrit: 45%
D) A and C

Question 11

A term used to describe a blood sample in which the red blood cells have ruptured is

A) hematoma.
B) preservatives.
C) hemolyzed.
D) teratogen.

Question 12

Which of the following is the most efficient method of preventing the spread of infection in a laboratory?

A) Using a sterile container for sharps
B) Washing your hands
C) Using sterile cups in urine collection
D) Cleaning with a chemical disinfectant

Question 13

A centrifuge is used to separate

A) solids from liquids.
B) blood cells from serum or plasma.
C) crystals from urine.
D) All of the above

Question 14

The ocular of the microscope generally magnifies the image

A) 2 times.
B) 5 times.
C) 10 times.
D) minimally.

Question 15

Laboratory department that studies bacteria, fungi, yeasts, parasites, and viruses is

A) chemistry.
B) histology.
C) microbiology.
D) hematology.

Question 16

The microscope component that directs the light up through the slide is the

A) condenser.
B) iris diaphragm.
C) ocular.
D) magnification system.

Question 17

In the identification system of the National Fire Protection Association, the white diamond on the label indicates the chemical's

A) flammability.
B) special hazard information.
C) reactivity or stability.
D) health hazard.

Question 18

A blood culture and sensitivity (C&S) test is most likely to be performed in which division of the clinical laboratory?

A) Urinalysis
B) Chemistry
C) Hematology
D) Microbiology

Question 19

Decreased hemoglobin levels are seen in which of the following illnesses?

A) Iron-deficiency anemia
B) Hyperthyroidism
C) Cirrhosis of the liver
D) All of the above

Question 20

The act passed by Congress to establish quality standards for all laboratory testing is referred to as

A) FDA.
B) CDC.
C) CLIA.
D) MSDS.

Question 21

Section 1 on all safety data sheets is required to have which of the following?

A) Identification
B) Hazard(s) identification
C) First aid measures
D) Physical and chemical properties

Question 22

Which of the following requires the laboratory employer to have a written exposure control plan to protect the lab's employees?

A) OSHA's Bloodborne Pathogens Standard
B) CDC's universal precautions
C) CDC's standard precautions
D) OSHA's SDS standard

Question 23

The stepwise method used to collect, process, and test a specimen that will be used as evidence in a legal case is called

A) CLIA-waived.
B) chain of custody.
C) forensic testing.
D) quality control.

Question 24

Which department of the laboratory analyzes blood, cerebrospinal fluid (CSF), urine, and joint fluid.

A) Microbiology
B) Urinalysis
C) Chemistry
D) Hematology

Question 25

In a physician's office laboratory, which of the following is (are) the most common hazardous chemical(s)?

A) Sodium hypochlorite
B) Caviwipes and glutaraldehyde
C) Acetone and dyes
D) All of the above

Question 26

Specimen labels should include all of the following except

A) patient's full name.
B) identification number.
C) date and time of collection.
D) provider name.

Question 27

Which of the following urine tests is performed using a chemical test strip?

A) Presence of crystals
B) Presence of yeast
C) Presence of parasites
D) Presence of nitrites

Question 28

Which of the choices below encompasses a comprehensive set of policies and procedures developed to ensure the reliability of laboratory results.

A) Quality control
B) Preventive maintenance
C) Quality assurance
D) Reference range

Question 29

What is the term defined as a substance or chemical being analyzed or detected in a specimen.

A) Aliquot
B) Analyte
C) Aspirate
D) Exudate

Question 30

A chemical added to a blood sample after collection to prevent clotting is called a(n)

A) reagent.
B) preservative.
C) analyte.
D) anticoagulant.

Question 31

Incubators used in the microbiology laboratory generally maintain a constant temperature of

A) 90 $\degree$ to 94 $\degree$ F.
B) 95 $\degree$ to 98.6 $\degree$ F.
C) 99 $\degree$ to 104 $\degree$ F.
D) 104.4 $\degree$ to 110 $\degree$ F.

Question 32

The top diamond (red) of the national fire protection association identification system indicates which of the following?

A) Flammability
B) Health hazard
C) Special hazard information
D) Reactivity or stability hazard

Question 33

The term used that indicates a laboratory test should be run immediately.

A) ASAP
B) Code blue
C) STAT
D) PPE

Question 34

Which department of the clinical laboratory would perform sensitivity testing on organisms to determine the proper antibiotic therapy?

A) Chemistry
B) Microbiology
C) Hematology
D) All of the above

Question 35

Which type of specimen must be chilled if testing will not be performed immediately?

A) Blood
B) Urine
C) Semen
D) All of the above

Question 36

What is the magnification for an oil immersion microscope objective?

A) 4 $\times$
B) 10 $\times$
C) 40 or 45 $\times$
D) 100 $\times$

Question 37

Before a laboratory test can be used for patient samples, quality control must be run to ensure that the test is considered

A) precise.
B) accurate.
C) reliable.
D) dependable.

Question 38

The microscopic analysis of cells is the science of

A) cytology.
B) histology.
C) hematology.
D) microbiology.

Question 39

What term describes the physical, chemical, and microscopic examination of urine.

A) Urinalysis
B) Culture and sensitivity
C) Erythrocyte sedimentation rate
D) None of the above

Question 40

The most common specimens collected for laboratory testing include

A) blood and urine.
B) swab samples from wounds or mucous membranes.
C) feces or gastric content.
D) Both A and B

Question 41

Laboratories that perform moderate- to high-complexity tests must undergo an unannounced inspection every 2 years.

Question 42

A screening test is performed to help diagnose a specific health problem in the patient.

Question 43

Immersion oil prevents refraction of the light and improves the resolution of the magnified image.

Question 44

Physical hazards in the laboratory can be classified as electrical, fire, or mechanical.

Question 45

The gram is the unit of mass in the metric system.

Question 46

The shortest objective lens on the microscope has the lowest power (4 $\times$ ) and is called the scanning lens.

Question 47

Microbiology specimens must be collected in sterile containers.

Question 48

The most effective means of preventing infection is the repeated, thorough hand washing or sanitization of the hands.

Question 49

For a quantitative test, the result is expressed numerically.

Question 50

The longer the objective of the microscope, the greater the magnification of the lens.

Question 51

Medical assistants are trained to perform high-complexity tests in the physician's office.

Question 52

A fecal occult blood test is an example of a qualitative screening test.

Question 53

If chemicals are splashed into the eyes, the eyes should be flushed with water from an eyewash station for at least 15 minutes.

Question 54

A centrifuge load always contains an even number of tubes.

Question 55

Patient samples are tested in the medical laboratory to determine whether test results are within a certain reference range.

Question 56

A decrease in hemoglobin levels in red blood cells (RBCs) is seen in iron-deficiency anemia.

Question 57

Chain of custody procedures is extremely important when specimens are collected and handled for drug and alcohol testing.

Question 58

For qualitative tests, a numeric value is attached to the result that specifically states the amount of analyte in a given volume of specimen.

Question 59

The military clock time of 1735 hours corresponds to 5:35 AM on the Greenwich clock.