Lecture 16 Quiz

Question 1

Which of the following is NOT a principle commonly used in point-of-care analyzers:

(a) Reflectance
(b) Lateral-Flow Immunoassays
(c) Light Scattering
(d) Mass Spectrometry

Answer 1

(d) Mass Spectrometry

Question 2

The technique that measures the concentration of solute particles that contribute to the osmotic pressure of a solution, as in blood or body fluids, is known as:

(a) Pressurization
(b) Mass Spectrometry
(c) Partial Pressure
(d) Osmometry

Answer 2

(d) Osmometry

Question 3

Mass Spectrometry separates/characterizes molecules based on their________.

(a) Size
(b) Conductivity
(c) Electrostatic Properties
(d) Mass to Charge Ratio

Answer 3

(d) Mass to Charge Ratio

Question 4

An osmole is the unit of measurement that describes the number of ________ of a compound that contribute to the osmotic pressure of a chemical solution.

(a) Grams
(b) Moles
(c) Liters
(d) Ions

Answer 4

(b) Moles

Question 5

Prior to being sent through the mass spectrometer, samples must be________.

(a) Vaporized
(b) Diluted
(c) Dyed
(d) Neutralized

Answer 5

(a) Vaporized

Question 6

Mass spectrometry is a _____ technique.

(a) Qualitative
(b) Quantitative
(c) Qualitative and Quantitative
(d) Outdated

Answer 6

(c) Qualitative and Quantitative

Question 7

Osmolality is commonly measured in the clinical laboratory using which of the following techniques:

(a) Boiling Point
(b) Specific Gravity
(c) Osmotic Pressure Analysis
(d) Freezing Point Depression

Answer 7

(d) Freezing Point Depression

Question 8

Mass spectrometry aids in the identification of which of the following:

(a) Therapeutic drugs
(b) Drugs of abuse
(c) Trace Metals (Lead, Chromium, etc.)
(d) All of the above

Answer 8

(d) All of the above

Question 9

Which of the following is true regarding Point of Care Testing (POCT):

(a) All point of care testing is considered waived testing.
(b) Point of care testing is performed in either the Hematology or Chemistry department of the lab.
(c) Point of Care Testing refers to the location that the testing takes place – with or very near the patient (ie. Patient bedside, Emergency Room, Ambulance, etc.)
(d) In order to perform all point of care testing, one must be a certified Medical Laboratory Scientist.

Answer 9

(c) Point of Care Testing refers to the location that the testing takes place – with or very near the patient (ie. Patient bedside, Emergency Room, Ambulance, etc.)

Question 10

Osmolality and osmolarity are both colligative properties of a solution. In terms of solutions and their calculations, which of the following is correct:

(a) Osmolality: w/v; Osmolarity: w/v
(b) Osmolality: w/w; Osmolarity: w/v
(c) Osmolality: w/w; Osmolarity: w/w
(d) Osmolality: w/v; Osmolarity: w/w