A surgeon is explaining to the parents of a 6-year-old boy the rationale for the suggestion of removing the boy's spleen. Which of the following teaching points would be most accurate?
A)
"Ferritin is the activated and usable form of iron that your red blood cells can use to transport oxygen."
B)
"Ferritin is a stored form of iron that indirectly shows me whether you would benefit from iron pills."
C)
"Ferritin is a protein-iron complex that allows your red blood cells to make use of the iron that you consume in your diet."
D)
"Ferritin is the form of iron that is transported in your blood plasma to red blood cells that need it."
Ans:
B
Feedback:
Ferritin is the protein-iron complex that is stored in tissues, especially the liver, and the serum levels can be used as an indicator of the need for iron supplements. It is not accurately characterized as an activated form of iron, nor does it mediate the actual use of iron by erythrocytes. Transferrin, not ferritin, is transported in plasma, and it is associated with iron storage.
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