Lab Values - QUIZ

Question 1

Which of the following is not part of the complete blood count?
Select all that apply.
a) Leucocytes
b) Hemoglobin
c) Hematocrit
d) Blood Urea Nitrogen
e) Platelet count

Answer 1

d) Blood Urea Nitrogen

Question 2

For any given blood test, what percentage of a healthy population will have a result outside of the ‘normal’ range?

a) 0.5%
b) 2.5%
c) 10%
d) 1%
e) 5%

Answer 2

e) 5%

Question 3

Which of the following statements is true?

a) There are more white cells in every ml of blood than there are platelets
b) A hemoglobin level of 130g/L rules out significant acute bleeding in trauma
c) A hemoglobin level of higher than 180g/L is a sign of chronic hypoxic lung disease
d) Basophils make up most of the white cell count
e) A white cell count (WBC) of over 16 x 109cells/L is diagnostic for infection

Answer 3

c) A hemoglobin level of higher than 180g/L is a sign of chronic hypoxic lung disease

Question 4

Match the following liver test parameters to potential causes of raised values.

a) GGT
b) ALT
c) ALP
d) AST
i) Liver damage
ii) Liver damage, muscle damage, MI
iii) Cholestasis, bone breakdown, pregnancy
iv) Cholestasis

Answer 4

a) GGT = iv) Cholestasis
b) ALT = i) Liver damage
c) ALP = iii) Cholestasis, bone, pregnancy
d) AST = ii) Liver/muscle damage, MI

Question 5

Which of the following statements regarding clotting tests is true?

a) The INR is decreased in patients taking Warfarin
b) An elevated D-Dimer makes a DVT or PE unlikely
c) The normal values for INR are 0.8 to 1.1
d) Anti-Xa is used to monitor the therapeutic effect of Heparin
e) Fibrinogen is elevated in disseminated intravascular coagulation (DIC)

Answer 5

c) The normal values for INR are 0.8 to 1.1

d) Anti-Xa is used to monitor the therapeutic effect of Heparin

Question 6

Which of the following abnormalities are present on this Chem 10 result?
Select all that apply.
a) Hypocalcemia
b) Renal failure
c) Hyponatremia
d) Hyperkalemia
e) Hyperglycemia

Answer 6

a) Hypocalcemia
b) Renal failure
c) Hyponatremia
d) Hyperkalemia

Question 7

The arterial blood gas on the right demonstrates all of the following, except:

a) Partial respiratory compensation
b) Low bicarbonate levels
c) Hypoxia
d) Metabolic acidosis
e) A raised lactate

Answer 7

c) Hypoxia