Iron is stored in human body in combination with
**Core Concept**
Iron storage in the human body is a crucial aspect of maintaining adequate iron levels. The body primarily stores iron in the form of a complex molecule that allows for controlled release of iron.
**Why the Correct Answer is Right**
Iron is stored in the body in combination with a protein called ferritin, which is produced by the liver, spleen, and bone marrow. Ferritin has a high affinity for iron, allowing it to bind and store it in a non-toxic form. This complex, referred to as ferritin-iron, is the primary form of iron storage in the body.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because while transferrin is an iron-binding protein, it is primarily involved in iron transport rather than storage.
**Option B:** This option is incorrect because hemosiderin is a breakdown product of ferritin and is not the primary form of iron storage in the body.
**Option C:** This option is incorrect because lactoferrin is an iron-binding protein found primarily in milk and is not the primary form of iron storage in the human body.
**Clinical Pearl / High-Yield Fact**
Ferritin levels are often used as a surrogate marker for iron stores, but it's essential to note that ferritin can also be elevated in conditions such as inflammation and malignancy.
**Correct Answer:** D. Ferritin.