Poor protein-caloric nutritional status is associated with which of the following changes in serum proteins?

Poor protein-caloric nutritional status is associated with which of the following changes in serum proteins?

• A. Decreased prealbumin level
• B. Low level of γ-globulins
• C. Elevated ceruloplasmin concentration
• D. Increased α1-fetoprotein level

Answer: (A)

Poor protein-calorie status slims the liver’s production of proteins that have short lifespans, so their levels drop quickly when intake is inadequate. Prealbumin, also called transthyretin, is one of these short-lived proteins with a half-life of only a couple of days. Because it responds rapidly to changes in nutritional intake, a low prealbumin level is a sensitive and early indicator of protein-energy malnutrition. In contrast, serum albumin has a longer half-life and may not fall as quickly in acute malnutrition, making it a slower marker. Immunoglobulins (gamma globulins) can be affected by immune status but are not as reliable for tracking acute nutritional changes. Ceruloplasmin is an acute-phase reactant that can actually rise with inflammation, not specifically drop with malnutrition. α1-fetoprotein is not used to assess nutritional status. So, the most direct and sensitive change in this context is a decreased prealbumin level.

Poor protein-calorie status slims the liver’s production of proteins that have short lifespans, so their levels drop quickly when intake is inadequate. Prealbumin, also called transthyretin, is one of these short-lived proteins with a half-life of only a couple of days. Because it responds rapidly to changes in nutritional intake, a low prealbumin level is a sensitive and early indicator of protein-energy malnutrition.

In contrast, serum albumin has a longer half-life and may not fall as quickly in acute malnutrition, making it a slower marker. Immunoglobulins (gamma globulins) can be affected by immune status but are not as reliable for tracking acute nutritional changes. Ceruloplasmin is an acute-phase reactant that can actually rise with inflammation, not specifically drop with malnutrition. α1-fetoprotein is not used to assess nutritional status.

So, the most direct and sensitive change in this context is a decreased prealbumin level.