AF CDC 4T051A MEDICAL
LABORATORY JOURNEYMAN
ADMINISTRATION AND CHEMISTRY
VOLUME 2. CLINICAL CHEMISTRY
Question and answers already passed
1. (201) The term that best describes the water found within cells is?
a. Water balance
b. Total body water
c. Intracellular water
d. Extracellular water - correct answer ✔c. Intracellular water
p. 1.1
2. (201) An example of calculated supplemental data is?
a. The anion gap
b. A cholesterol level
c. An electrolyte panel
d. The serum glucose level - correct answer ✔a. The anion gap
p. 1.2
3. (201) A trend in high or low anion gaps indicate that?
a. The patient sample is normal
b. Your quality control fluid has expired
c. There may be severe hemolysis in one of the reagents
d. There may be a consistent error in at least one of the analytes - correct
answer ✔d. There may be a consistent error in at least one of the analytes
,p. 1. 5
4. (202) The ultimate regulators of sodium levels in the body are the?
a. Insulin and follicle stimulating hormone
b. Adrenal glands through enzymatic action
c. Lungs through cardiopulmonary exchange
d. Kidneys through reabsorption and excretion - correct answer ✔d. Kidneys
through reabsorption and excretion
5. (202) Hemolyzed samples for potassium analysis should be avoided
because?
a. The released hemoglobin will react with sodium
b. Intracellular potassium will be released, affecting results
c. Of interference with ion-selective electrode (ISE) methods
d. Color interference will affect flame emission photometry results - correct
answer ✔b. Intracellular potassium will be released, affecting results
p. 1.8?
6. (202) In the disease cystic fibrosis, the concentration of chloride ions in
sweat is?
a. Decreased due to insulin
b. Elevated due to hormones
c. Decreased due to evaporation
d. Elevated due to a genetic defect - correct answer ✔d. Elevated due to a
genetic defect
p. 1.9
,7. (202) If you discover that a sample for bicarbonate analysis has been left
open in a test tube rack, the result could be?
a. Decreased due to red cell hemolysis
b. Increased due to CO2 absorption from the air
c. Falsely decreased due to CO2 escaping into the air
d. Falsely increased due to evaporation of the sample - correct answer ✔c.
Falsely decreased due to CO2 escaping into the air
8. (203) Because the lungs and kidneys regulate acid-base balance, a patient
with disorders affecting these organs will be followed using?
a. An EKG
b. A hepatic panel
c. Blood gas analysis
d. Treadmill and blood enzyme analysis - correct answer ✔c. Blood gas
analysis
p. 1.14
9. (203) What happened during internal respiration when the partial pressure
oxygen is 90 mm Hg and carbon dioxide is about 40 mm Hg?
a. Carboxyhemoglobin is formed
b. Patient begins to hyperventilate
c. Oxygen moves out of the cell and carbon dioxide moves into the cell
d. Oxygen moves into the cell and carbon dioxide moves out of the cell -
correct answer ✔d. Oxygen moves into the cell and carbon dioxide moves
out of the cell
p. 1.17
10. (203) Blood gas samples should be collected only by?
, a. Technicians on ward rounds.
b. Nureses and cardiopulmonary personnel
c. Providers or specially trained personnel
d. Seasoned lab technicians that know how - correct answer ✔c. Providers
or specially trained personnel
p. 1.17
11. (203) What do you do if you receive a blood gas sample with an air bubble
in it?
a. Report everything but the pCO2
b. Discard the pO2 because it will be elevated
c. Dispose of the original sample and call the ward for a new sample
d. Annotate the final report with the condition the sample was in when it
arrived in the laboratory - correct answer ✔d. Annotate the final report with
the condition the sample was in when it arrived in the laboratory
p. 1.18
12. (204) The importance of pH in the blood is critical because?
a. All enzyme reactions occur at a pH of 7.0
b. A pH less than 6.5 causes severe dehydration
c. a pH outside of 6.8 to 7.8 is incompatible with life
d. a pH greater than 8.0 can cause respiratory acidosis - correct answer ✔c.
a pH outside of 6.8 to 7.8 is incompatible with life
p. 1.19
13. (204) Which one of the following substances is a buffer found in large
amounts and has its concentrations within the body controlled by lungs and
the kidneys?
LABORATORY JOURNEYMAN
ADMINISTRATION AND CHEMISTRY
VOLUME 2. CLINICAL CHEMISTRY
Question and answers already passed
1. (201) The term that best describes the water found within cells is?
a. Water balance
b. Total body water
c. Intracellular water
d. Extracellular water - correct answer ✔c. Intracellular water
p. 1.1
2. (201) An example of calculated supplemental data is?
a. The anion gap
b. A cholesterol level
c. An electrolyte panel
d. The serum glucose level - correct answer ✔a. The anion gap
p. 1.2
3. (201) A trend in high or low anion gaps indicate that?
a. The patient sample is normal
b. Your quality control fluid has expired
c. There may be severe hemolysis in one of the reagents
d. There may be a consistent error in at least one of the analytes - correct
answer ✔d. There may be a consistent error in at least one of the analytes
,p. 1. 5
4. (202) The ultimate regulators of sodium levels in the body are the?
a. Insulin and follicle stimulating hormone
b. Adrenal glands through enzymatic action
c. Lungs through cardiopulmonary exchange
d. Kidneys through reabsorption and excretion - correct answer ✔d. Kidneys
through reabsorption and excretion
5. (202) Hemolyzed samples for potassium analysis should be avoided
because?
a. The released hemoglobin will react with sodium
b. Intracellular potassium will be released, affecting results
c. Of interference with ion-selective electrode (ISE) methods
d. Color interference will affect flame emission photometry results - correct
answer ✔b. Intracellular potassium will be released, affecting results
p. 1.8?
6. (202) In the disease cystic fibrosis, the concentration of chloride ions in
sweat is?
a. Decreased due to insulin
b. Elevated due to hormones
c. Decreased due to evaporation
d. Elevated due to a genetic defect - correct answer ✔d. Elevated due to a
genetic defect
p. 1.9
,7. (202) If you discover that a sample for bicarbonate analysis has been left
open in a test tube rack, the result could be?
a. Decreased due to red cell hemolysis
b. Increased due to CO2 absorption from the air
c. Falsely decreased due to CO2 escaping into the air
d. Falsely increased due to evaporation of the sample - correct answer ✔c.
Falsely decreased due to CO2 escaping into the air
8. (203) Because the lungs and kidneys regulate acid-base balance, a patient
with disorders affecting these organs will be followed using?
a. An EKG
b. A hepatic panel
c. Blood gas analysis
d. Treadmill and blood enzyme analysis - correct answer ✔c. Blood gas
analysis
p. 1.14
9. (203) What happened during internal respiration when the partial pressure
oxygen is 90 mm Hg and carbon dioxide is about 40 mm Hg?
a. Carboxyhemoglobin is formed
b. Patient begins to hyperventilate
c. Oxygen moves out of the cell and carbon dioxide moves into the cell
d. Oxygen moves into the cell and carbon dioxide moves out of the cell -
correct answer ✔d. Oxygen moves into the cell and carbon dioxide moves
out of the cell
p. 1.17
10. (203) Blood gas samples should be collected only by?
, a. Technicians on ward rounds.
b. Nureses and cardiopulmonary personnel
c. Providers or specially trained personnel
d. Seasoned lab technicians that know how - correct answer ✔c. Providers
or specially trained personnel
p. 1.17
11. (203) What do you do if you receive a blood gas sample with an air bubble
in it?
a. Report everything but the pCO2
b. Discard the pO2 because it will be elevated
c. Dispose of the original sample and call the ward for a new sample
d. Annotate the final report with the condition the sample was in when it
arrived in the laboratory - correct answer ✔d. Annotate the final report with
the condition the sample was in when it arrived in the laboratory
p. 1.18
12. (204) The importance of pH in the blood is critical because?
a. All enzyme reactions occur at a pH of 7.0
b. A pH less than 6.5 causes severe dehydration
c. a pH outside of 6.8 to 7.8 is incompatible with life
d. a pH greater than 8.0 can cause respiratory acidosis - correct answer ✔c.
a pH outside of 6.8 to 7.8 is incompatible with life
p. 1.19
13. (204) Which one of the following substances is a buffer found in large
amounts and has its concentrations within the body controlled by lungs and
the kidneys?
