Plasma ferritin levels may be reduced in all of the following conditions, except –
**Core Concept**
Plasma ferritin levels reflect the stored **iron** in the body, and its reduction indicates **iron deficiency**. Ferritin is a protein that stores iron, and low levels are often seen in conditions where iron stores are depleted.
**Why the Correct Answer is Right**
Since the correct answer is not provided, let's discuss the concept. In conditions like **chronic disease**, **inflammation**, or **liver disease**, ferritin levels may actually be increased due to its role as an **acute-phase reactant**.
**Why Each Wrong Option is Incorrect**
**Option A:** Could be incorrect if it's related to a condition where ferritin is actually increased, like inflammation.
**Option B:** Might be a condition where ferritin is increased, such as liver disease.
**Option C:** Could represent a scenario where ferritin levels are elevated, not reduced.
**Why Each Wrong Option is Incorrect (continued)**
**Option D:** If it's related to iron deficiency, it would indeed show reduced ferritin levels, but without the correct answer, we can't determine which option is the exception.
**Clinical Pearl / High-Yield Fact**
Remember, **ferritin** is an acute-phase reactant, so its levels can be elevated in inflammatory conditions, making it a less reliable marker of iron stores in these cases.
**Correct Answer:** D. Iron deficiency anemia