Your doctor may recommend over-the-counter iron tablets to replenish the iron stores in your body. Your doctor will let you know the correct dose for you. Iron is also available in liquid form for infants and children. To improve the chances that your body will absorb the iron in the tablets, you may be instructed to:
Iron deficiency can't be corrected overnight. You may need to take iron supplements for several months or longer to replenish your iron reserves. Generally, you'll start to feel better after a week or so of treatment. Ask your doctor when to have your blood rechecked to measure your iron levels. To be sure that your iron reserves are replenished, you may need to take iron supplements for a year or more.
If iron supplements don't increase your blood-iron levels, it's likely the anemia is due to a source of bleeding or an iron-absorption problem that your doctor will need to investigate and treat. Depending on the cause, iron deficiency anemia treatment may involve:
Make an appointment with your doctor if you have any signs and symptoms that worry you. If you're diagnosed with iron deficiency anemia, you may need tests to look for a source of blood loss, including tests to examine your gastrointestinal tract.
The American Red Cross routinely checks your hemoglobin before each blood and platelet donation. Hemoglobin is a protein in your body that contains iron and carries oxygen to the tissues in your body. A screening test measures the amount of hemoglobin from a single drop of blood obtained from a finger stick. If your hemoglobin is too low, we will ask that you wait to donate.
Donating blood removes iron from your body which is needed to help maintain strength and energy. The American Red Cross encourages all blood and platelet donors to learn how to maintain healthy iron levels and how blood donation impacts the level of iron in your body.
Normal hemoglobin ranges are different for males and females. The normal range for men is 13.5 to 17.5g/dL. For women, the normal range is 12.0 to 15.5g/dL. African American men and women will have a normal range that varies by 0.7g/dL at the low end of the range.
No. The Red Cross does not measure your iron level before donating, but does check your hemoglobin level. Your hemoglobin level is checked using a fingerstick prior to donating. If your hemoglobin is low, you will be asked to wait to donate until your levels return to normal.
Some donors, such as young and frequent donors, may help increase or maintain their iron levels by taking an iron supplement with 18-38 mg of elemental iron or a multivitamin with 18 mg of iron for at least 60 days after donating whole blood or 120 days after a power red donation.
Foods have two types of iron: heme iron and non-heme iron. Heme iron is most easily absorbed by your body. It is found in meat and animal products such as beef, turkey (especially dark meat), chicken, lamb, pork and liver.
Vitamin C helps the body absorb iron, which is why we recommend eating foods high in vitamin C. Foods such as tomatoes, oranges and other citrus fruits, and bell peppers have high levels of vitamin C. In addition to having high levels of heme iron, red meats can also help the body absorb non-heme iron.
Most people cannot get too much iron from food they choose to eat, which is why a balanced diet is important. Some people may already have a condition called hereditary hemochromatosis, which is an overload of iron that can lead to serious health problems if left untreated. People with hemochromatosis should check with their health-care provider to find out how much iron in their diet is allowable.
The metabolism of all living organisms requires iron. Iron is a part of heme, which is the active site of peroxidases that protect cells from oxidative injury by reducing peroxides to water. Heme is also the active site of electron transport in cytochromes. [4] When iron levels are insufficient, proliferation of bacteria or nucleated cells stops. [4]
Iron deficiency anemia may cause pallor, stomatitis, glossitis (smooth red tongue), angular cheilitis, and koilonychias. Patients with Plummer-Vinson syndrome may experience esophageal webs, dysphagia, and iron deficiency anemia. [5] Retinal hemorrhages and exudates may also be observed, especially in individuals with severe anemia. Although rare, splenomegaly in individuals with iron deficiency anemia likely results from other causes. [6, 4, 7]
The classic combination of these laboratory findings is observed only in severe and uncomplicated iron deficiency anemia that presents in patients without infection or malignancy who are not receiving blood transfusions or iron therapy. [4] Serum iron levels are often low in untreated iron deficiency anemia; however, levels may be normal. [8, 9]
If patients with iron deficiency anemia receive iron medication before blood is drawn, normal or high concentrations are typically noted. Even multivitamins with low (18 mg) elemental iron may produce this result. Thus, 24 hours before a blood draw for serum iron, all oral iron mediation should be stopped. Parenteral injection of iron dextran may result in high serum iron levels (eg, 500-1000 g/dL) for several weeks. [10] Infusion of sodium ferric gluconate or iron sucrose causes increases in iron levels that last much shorter; [11, 12] these infusions are unlikely to interfere with serum iron testing. [11, 12, 4]
The amount of circulating iron bound to transferrin is the serum iron level. The circulating transferrin is indirectly measured by the total iron-binding capacity (TIBC). Transferrin saturation in excess of 50% suggests a disproportionate amount of iron bound to transferrin is being delivered to nonerythroid tissues. If this continues for an extended time, tissue iron overload may be observed. [13]
Serum iron testing does not reliably determine iron deficiency or identify hemochromatosis or other iron overload states. TIBC, transferrin saturation percentage, and ferritin levels are recommended measurements in these settings. Oral contraceptives increase the iron level. Iron dextran elevates serum iron levels several weeks. Ingestion of even small amounts of iron may transiently increase serum iron levels. Patients undergoing iron chelation therapy (deferoxamine) may have inaccurate serum iron test results.
Diurnal variation is observed with serum iron testing; normal values are found in the mid-morning, low values are found in mid-afternoon, and even lower values are found near midnight. Diurnal variation disappears at values below 45 g/dL. [3]
A study by van der Staaij et al indicated that the ratio of transferrin saturation to hepcidin can be used to distinguish TMPRSS6-related iron refractory iron deficiency anemia from iron deficiency anemia arising from other causes, if inflammation is low or absent and no recent iron therapy has been administered. The investigators found the median transferrin saturation/hepcidin ratio to be higher for patients with the iron refractory anemia than for the other iron deficiency anemia cases, the values being 0.6%/nM and 16.7%/nM, respectively. [14]
Eric B Staros, MD Associate Professor of Pathology, St Louis University School of Medicine; Director of Clinical Laboratories, Director of Cytopathology, Department of Pathology, St Louis University Hospital
Eric B Staros, MD is a member of the following medical societies: American Medical Association, American Society for Clinical Pathology, Association for Molecular Pathology, College of American Pathologists
Disclosure: Nothing to disclose.
Iron tests measure different substances in the blood to check iron levels in your body. Iron is a mineral that your body needs for growth and development. Your body uses iron to make hemoglobin, a protein in red blood cells. It carries oxygen from the lungs to all parts of the body, Iron is also important for healthy muscles, bone marrow, and organ function. Your body also needs iron to make some hormones.
The amount of iron you need each day depends on your age, your sex, and whether you consume a mostly plant-based diet. Iron levels that are too low or too high can cause health concerns. For example, not having enough iron in your body is the most common cause of anemia. Anemia is a condition in which your blood has a lower-than-normal amount of red blood cells.
There are different types of iron tests. You may just have one type of test. But in some cases, your health care provider might order several different iron tests to understand your results better. The different types of iron tests include:
You may need testing if you have symptoms of iron levels that are too low or too high. However, low iron may not cause symptoms until the level is very low. So, your provider may order a routine iron test to check your iron level.
A health care professional will take a blood sample from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out. This usually takes less than five minutes.
Your provider may ask you to fast (not eat or drink) for 12 hours before your test. The test is usually done in the morning. If you have any questions about how to prepare for your test, talk to your health care provider.
If your iron test results are not normal, it does not necessarily mean you have a medical condition that needs treatment. Some medicines, including birth control pills and estrogen treatments, can affect iron levels. Iron levels may also be lower for women during their menstrual cycles.
People with mild or moderate iron-deficiency anemia may not have any symptoms. More serious iron-deficiency anemia may cause common symptoms of anemia, such as tiredness, shortness of breath, or chest pain. Other symptoms include:
Sometimes young children can develop iron-deficiency anemia if they do not get enough iron in their diet. This usually occurs between the ages of 9 months and 1 year, as a child transitions to eating whole foods.
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