Question 1

Which of the following statements best describes unit test reagents?

Accepted Answer

A)  There is an abundance of reagent present for the performance of several tests. 
B)  There is exactly twice the amount of reagent present for the performance of a single test. 
C)  There is sufficient reagent present for the performance of a single test. 
D)  There is only eight hours of reagent present to perform the tests requested. 
A)  There is an abundance of reagent present for the performance of several tests. 
B)  There is exactly twice the amount of reagent present for the performance of a single test. 
C)  There is sufficient reagent present for the performance of a single test. 
D)  There is only eight hours of reagent present to perform the tests requested. C

Question 2

Filters and diffraction gratings are examples of which of the following?

Accepted Answer

A)  Monochromators 
B)  Cuvettes 
C)  Light sources 
D)  Slits 
A)  Monochromators 
B)  Cuvettes 
C)  Light sources 
D)  Slits A

Question 3

Which of the following types of light sources emits radiation that changes in intensity very slowly as a function of wavelength?

Accepted Answer

A)  Pulsating source 
B)  Line source 
C)  Continuum source 
D)  Microwave source 
A)  Pulsating source 
B)  Line source 
C)  Continuum source 
D)  Microwave source C

Question 4

Bandpass is defined as:

Accepted Answer

A)  The range of wavelengths at a point halfway between the baseline and the peak. 
B)  The half power point or full width at half maximum. 
C)  The total range of wavelengths transmitted. 
D)  The product of parallel beams of radiation. 
A)  The range of wavelengths at a point halfway between the baseline and the peak. 
B)  The half power point or full width at half maximum. 
C)  The total range of wavelengths transmitted. 
D)  The product of parallel beams of radiation.

Question 5

A glucose result is falsely elevated and it was discovered that the previous sample on the sample carousel has abnormally high serum glucose. Which of the following can cause this error?

Accepted Answer

A)  Pipetting an extra volume of diluents into the sample with the falsely elevated glucose 
B)  Carryover 
C)  A leak in the reagent-dispensing probe 
D)  Double pipetting of the sample with the elevated glucose result 
A)  Pipetting an extra volume of diluents into the sample with the falsely elevated glucose 
B)  Carryover 
C)  A leak in the reagent-dispensing probe 
D)  Double pipetting of the sample with the elevated glucose result

Question 6

Direct tube sampling by automated analyzers eliminates the need to perform which of the following tasks?

Accepted Answer

A)  Pour off specimens into another container 
B)  Manual dilution of specimens 
C)  Check for clots in specimens 
D)  Check for proper sample volume 
A)  Pour off specimens into another container 
B)  Manual dilution of specimens 
C)  Check for clots in specimens 
D)  Check for proper sample volume

Question 7

Any specimen, by a command to the processing systems, can be analyzed by any available process, in or out of sequence with other specimens, and without regard to their initial order describes which type of sample processing principle?

Accepted Answer

A)  Batch and discrete analysis 
B)  Centrifugal analysis 
C)  Continuous flow analysis 
D)  Random access analysis 
A)  Batch and discrete analysis 
B)  Centrifugal analysis 
C)  Continuous flow analysis 
D)  Random access analysis

Question 8

Light reflecting off a urine dipstick absorbent surface is an example of which of the following?

Accepted Answer

A)  Specular reflectance 
B)  Diffuse reflectance 
C)  Refractance 
D)  Chemiluminescence 
A)  Specular reflectance 
B)  Diffuse reflectance 
C)  Refractance 
D)  Chemiluminescence

Question 9

What is the concentration of creatinine in a serum sample if given the following?
Atest = 0.150
Astandard = 0.90
Cstandard = 1.0 mg/dL

Accepted Answer

A)  0.25 mg/dL 
B)  0.5 mg/dL 
C)  0.7 mg/dL 
D)  0.167 mg/dL 
A)  0.25 mg/dL 
B)  0.5 mg/dL 
C)  0.7 mg/dL 
D)  0.167 mg/dL

Question 10

Which of the following represents a disadvantage to acquiring and implementing total laboratory automation?

Accepted Answer

A)  Increases labeling errors 
B)  Increases turnaround times 
C)  Increases the need for additional full time equivalents (FTEs) 
D)  The initial costs are very high. 
A)  Increases labeling errors 
B)  Increases turnaround times 
C)  Increases the need for additional full time equivalents (FTEs) 
D)  The initial costs are very high.

Question 11

Oxidation of acridinium esters by hydrogen peroxide in the presence of peroxidase produces which of the following?

Accepted Answer

A)  Fluorescence 
B)  Phosphorescence 
C)  Translucence 
D)  Chemiluminescence 
A)  Fluorescence 
B)  Phosphorescence 
C)  Translucence 
D)  Chemiluminescence

Question 12

Which of the following is a cause of stray light failure in a spectrophotomer?

Accepted Answer

A)  Fingerprints on a cuvette 
B)  Misaligned monochromator 
C)  Room light entering the spectrophotometer and impinging upon the detector 
D)  A dirty holmium oxide filter 
A)  Fingerprints on a cuvette 
B)  Misaligned monochromator 
C)  Room light entering the spectrophotometer and impinging upon the detector 
D)  A dirty holmium oxide filter

Question 13

A designated area where a limited number of specific tasks are completed describes which of the following terms?

Accepted Answer

A)  Work area 
B)  Work station 
C)  Work room 
D)  Core laboratory 
A)  Work area 
B)  Work station 
C)  Work room 
D)  Core laboratory

Question 14

A chelate of europium (Eu3+) is used in which of the following assays?

Accepted Answer

A)  Radioimmunoassays 
B)  Chemiluminescent immunoassays 
C)  Time-resolved fluorescent immunoassays 
D)  Fluorescent polarization immunoassays 
A)  Radioimmunoassays 
B)  Chemiluminescent immunoassays 
C)  Time-resolved fluorescent immunoassays 
D)  Fluorescent polarization immunoassays

Question 15

The polarization of light in fluorescent polarization immunoassay allows the measurement of which of the following?

Accepted Answer

A)  Bound fraction in the presence of the free fraction 
B)  Only the bound fraction after the free fraction is removed 
C)  Both bound and free fractions 
D)  Antibodies to fluorescent label 
A)  Bound fraction in the presence of the free fraction 
B)  Only the bound fraction after the free fraction is removed 
C)  Both bound and free fractions 
D)  Antibodies to fluorescent label

Question 16

Which of the following statements best illustrates the difference between photons from fluorescent emission and the excitation photons?

Accepted Answer

A)  Emission photons are higher energy and longer wavelength. 
B)  Emission photons are lower energy and longer wavelength. 
C)  Emission photons are lower energy and shorter wavelength. 
D)  Emission photons are negatively charged and have zero mass. 
A)  Emission photons are higher energy and longer wavelength. 
B)  Emission photons are lower energy and longer wavelength. 
C)  Emission photons are lower energy and shorter wavelength. 
D)  Emission photons are negatively charged and have zero mass.

Question 17

Which of the following accounts for the temperature rise in freezing point osmometry?

Accepted Answer

A)  Heat of separation 
B)  Thermal currents flowing through the ethylene glycol 
C)  Heat of fusion 
D)  Heat of conduction 
A)  Heat of separation 
B)  Thermal currents flowing through the ethylene glycol 
C)  Heat of fusion 
D)  Heat of conduction

Question 18

Which of the following statements best describes discrete testing?

Accepted Answer

A)  Automatically measures up to 10 different analytes on a serum specimen whether they are requested or not 
B)  Measures only the test requested on a sample 
C)  Measures analytes in serum samples only 
D)  Automatically measures all of the tests that the analyzer is capable of performing 
A)  Automatically measures up to 10 different analytes on a serum specimen whether they are requested or not 
B)  Measures only the test requested on a sample 
C)  Measures analytes in serum samples only 
D)  Automatically measures all of the tests that the analyzer is capable of performing

Question 19

Didymium and holmium oxide filters are used to assess:

Accepted Answer

A)  Wavelength accuracy. 
B)  Voltage values. 
C)  Stray light. 
D)  Photometric accuracy. 
A)  Wavelength accuracy. 
B)  Voltage values. 
C)  Stray light. 
D)  Photometric accuracy.

Question 20

Which of the following describes atomic absorption spectroscopy?

Accepted Answer

A)  The transmittance of monochromatic electromagnetic radiation by an element in its excited state 
B)  The measurement of the electromagnetic radiation emitted by an element 
C)  The release of electromagnetic radiation due to a chemical reaction 
D)  The absorption of monochromatic electromagnetic radiation by an element in its ground state with a net zero charge 
A)  The transmittance of monochromatic electromagnetic radiation by an element in its excited state 
B)  The measurement of the electromagnetic radiation emitted by an element 
C)  The release of electromagnetic radiation due to a chemical reaction 
D)  The absorption of monochromatic electromagnetic radiation by an element in its ground state with a net zero charge

Exam 4: Instrumentation, Laboratory Automation, and Informatics

Which of the following statements best describes unit test reagents?

Filters and diffraction gratings are examples of which of the following?

Which of the following types of light sources emits radiation that changes in intensity very slowly as a function of wavelength?

Bandpass is defined as:

A glucose result is falsely elevated and it was discovered that the previous sample on the sample carousel has abnormally high serum glucose. Which of the following can cause this error?

Direct tube sampling by automated analyzers eliminates the need to perform which of the following tasks?

Any specimen, by a command to the processing systems, can be analyzed by any available process, in or out of sequence with other specimens, and without regard to their initial order describes which type of sample processing principle?

Light reflecting off a urine dipstick absorbent surface is an example of which of the following?

What is the concentration of creatinine in a serum sample if given the following? Atest = 0.150 Astandard = 0.90 Cstandard = 1.0 mg/dL

Which of the following represents a disadvantage to acquiring and implementing total laboratory automation?

Oxidation of acridinium esters by hydrogen peroxide in the presence of peroxidase produces which of the following?

Which of the following is a cause of stray light failure in a spectrophotomer?

A designated area where a limited number of specific tasks are completed describes which of the following terms?

A chelate of europium (Eu3+) is used in which of the following assays?

The polarization of light in fluorescent polarization immunoassay allows the measurement of which of the following?

Which of the following statements best illustrates the difference between photons from fluorescent emission and the excitation photons?

Which of the following accounts for the temperature rise in freezing point osmometry?

Which of the following statements best describes discrete testing?

Didymium and holmium oxide filters are used to assess:

Which of the following describes atomic absorption spectroscopy?

Laboratory Basics

Safety in the Clinical Chemistry Laboratory

Laboratory Statistics, Method Development and QC

Immunoassays

Molecular Diagnostics

Carbohydrates

Lipids

Proteins

Enzymes

Nonprotein Nitrogen Questions

Body Water and Electrolyte Homeostasis

Blood Gases, PH, and Acid-Base Balance

Mineral and Bone Metabolism

The Endocrine System

Gastrointestinal Function

Pancreas

Cardiac Function

Liver

Iron, Porphyrins, and Hemoglobin

Therapeutic Drug Monitoring

Toxic Substances

Nutrition and Vitamins

Tumor Markers

Geriatrics

Pediatrics

Filters

What is the concentration of creatinine in a serum sample if given the following? A_test = 0.150 A_standard = 0.90 C_standard = 1.0 mg/dL

A chelate of europium (Eu³⁺) is used in which of the following assays?