The serum protein that is analyzed to determine the presence of emphysema is:

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Alpha1-antitrypsin (A1AT) is a protein produced mainly in the liver that helps protect the lungs from damage caused by enzymes released from inflammatory cells. Deficiency in A1AT is associated with an increased risk of developing emphysema. Therefore, analyzing the level of A1AT in serum can help determine the presence of emphysema. Ceruloplasmin is a protein that carries copper in the blood and is involved in iron metabolism, but it is not directly related to emphysema. Alpha-fetoprotein is a protein produced during fetal development that can be used as a marker for certain types of cancer. Haptoglobin is a protein that binds to free hemoglobin, preventing it from causing damage, but it is not directly related to emphysema.

The Serum Protein That Is Analyzed to Determine the Presence