Transcription of Iron-Status Indicators
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Iron-Status Indicators
National Report on Biochemical Indicators of Diet and Nutrition in the Population 1999-2002 Iron-Status Indicators Iron functions as a component of proteins and enzymes. Almost two-thirds of the iron in the body (approximately grams of iron) is found in hemoglobin, the protein in red blood cells that carries oxygen to tissues, and about 15 percent is in the myoglobin of muscle tissue. The average American diet provides 10 15 milligrams (mg) of iron daily in the form of heme and nonheme iron. Heme iron is found in animal foods that originally contained hemoglobin and myoglobin, such as red meat, fish, and poultry.
Low serum ferritin concentrations thus are sensitive indicators of iron deiciency. Ferritin is also an acute-phase protein; acute and chronic diseases can result in increased ferritin concentration, potentially masking an iron-deiciency diagnosis. The generally accepted cut …
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