Question:

Acute phase proteins (APPs) include the following EXCEPT:

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Acute phase proteins are liver-made plasma proteins that rise during infection. Find the one that is a hormone instead.
Updated On: Nov 12, 2026
  • C Reactive protein (CRP)
  • Mannose binding protein
  • Alpha -1 acid glycoprotein
  • Erythropoietin
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The Correct Option is D

Solution and Explanation

Step 1: Understanding the Concept
Acute phase proteins (APPs) are plasma proteins made mainly by the liver whose levels rise quickly in infection or injury, as part of innate immunity.

Step 2: Check the options
C-reactive protein, mannose-binding protein and \(\alpha\)-1 acid glycoprotein are APPs.

Step 3: The exception
Erythropoietin is a kidney hormone that stimulates red blood cell formation, so it is not an APP.

Final Answer:
Erythropoietin is not an acute phase protein. \[ \boxed{\text{(D) }\text{Erythropoietin}} \]
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