Deck 44: Assisting in the Clinical Laboratory

Question 1

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

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

Answer 1

A and B

Question 2

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 the normal ranges of results
D) Obtaining and labeling specimens

Answer 2

Interpreting abnormal results and providing patients with diagnoses

Question 3

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

Answer 3

All of the above

Question 4

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

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

Question 5

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 6

The ocular of the microscope generally magnifies the image

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

Question 7

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 8

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.

Question 9

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

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

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

__________ is the study of bacteria, fungi, yeasts, parasites, and viruses.

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

Question 12

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 13

Balancing a centrifuge requires that all tubes in the load

A) have an equal amount of liquid of the same viscosity.
B) are of equal size and shape.
C) have a partner directly across in the rotor holder.
D) All of the above

Question 14

Which of the following is not a waived test?

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

Question 15

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 16

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 17

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

Question 18

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.

Question 19

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 20

In the identification system of the National Fire Protection Association, the white diamond indicates __________ of the chemical.

A) the flammability
B) special hazards
C) the reactivity or stability
D) the health hazard

Question 21

Specimen labels should include all of the following except

A) patient's full name.
B) patient's date of birth or unique identifier.
C) date and time of collection.
D) type of specimen.

Question 22

__________ is the physical, chemical, and microscopic examination of urine.

Question 23

The most common specimens collected include

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

Question 24

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

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

Question 25

Chemical analysis of urine is looking for which of the following?

A) Crystals
B) Yeasts
C) Parasites
D) Nitrites

Question 26

__________ is the single most important means of preventing the spread of infection.

Question 27

What power lens objective is used with a special oil that is placed directly on the slide?

A) 4*
B) 10*
C) 40 or 45*
D) 100*

Question 28

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

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

Question 29

__________ on swabs, tubes, transport media, and other collection containers should be checked before these items are used.

Question 30

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 31

A test may be used for testing patients when a series of control results show test

A) precision.
B) accuracy.
C) reliability.
D) None of the above

Question 32

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 33

The __________ is the substance tested for or analyzed in a specimen.

Question 34

An order found on a laboratory requisition that indicates the test must be done immediately is __________.

Question 35

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 36

The clinical __________ department analyzes blood, cerebrospinal fluid (CSF), urine, and joint fluid.

Question 37

The bottom diamond (white) 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 38

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
E) All of the above

Question 39

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

Question 40

Which of the following is the most effective means of preventing infection and is the single most effective way of preventing the spread of all infections?

A) Use of PPE
B) Hand hygiene
C) Safe needle practices
D) Respiratory hygiene

Question 41

The microscopic analysis of cells is the science of __________.

Question 42

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

Question 43

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

Question 44

__________ are fluids that have escaped from blood vessels and have been deposited in surrounding tissues.

Question 45

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

Question 46

Summarize methods that can be used to prevent physical hazards in the clinical laboratory.

Question 47

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

Question 48

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

Question 49

For a quantitative test, the result is expressed numerically.

Question 50

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

Question 51

The objective of __________ in the medical laboratory is to ensure the accuracy and reliability of test results.

Question 52

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

Question 53

An important responsibility of the medical assistant is to make sure collected specimens are labeled properly before they are sent to a reference laboratory. Summarize at least five items that must be included on a specimen label.

Question 54

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

Question 55

The medical assistant is trained to perform CLIA-waived tests in the ambulatory laboratory setting. Based on your understanding of these tests, summarize at least five of them, along with their functions.

Question 56

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

Question 57

Specimens collected in the ambulatory care setting frequently are sent to a(n) __________ for analysis.

Question 58

A centrifuge load always contains an even number of tubes.

Question 59

Describe the purpose of the Clinical Laboratory Improvement Amendments (CLIA).

Question 60

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

Question 61

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

Question 62

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 63

The metric system is based on a decimal system in which a combination of basic units and prefixes indicates a system of division in multiples of 100.

Question 64

Microbiology specimens must be collected in sterile containers.

Question 65

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

Question 66

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

Question 67

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

Question 68

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

Question 69

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

Question 70

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