Online Iron-Deficiency Anemia Testing & Treatment

Treatment depends on your blood test results, symptoms, and the cause of your iron deficiency. Common options include:

• Oral iron supplements: Ferrous sulfate, ferrous fumarate, and ferrous gluconate are common options. Your doctor will recommend the appropriate dose and schedule. Hemoglobin often starts to rise within the first few weeks, and treatment usually lasts 3 to 6 months so your body can rebuild its iron stores.
• Taking iron correctly: While iron is best absorbed on an empty stomach, taking it with a small amount of food may help if it upsets your stomach. Tea, coffee, calcium, and antacids can interfere with absorption, so take them at a different time.
• Iron-rich foods: Meat, poultry, seafood, beans, lentils, tofu, and fortified cereals can support recovery. Foods high in vitamin C, such as citrus fruits and bell peppers, help your body absorb plant-based iron. Diet alone may not correct iron deficiency or iron-deficiency anemia. See our full list of iron-rich foods for anemia.
• IV Iron: An iron infusion may be recommended if tablets do not work, cause intolerable side effects, or cannot be absorbed properly, or if iron levels need to be corrected quickly. IV iron is given in a clinic or hospital.
• Blood transfusions: These are generally reserved for severe anemia that needs urgent correction. Iron treatment may still be needed afterward to rebuild your stores.

Heavy periods, pregnancy, poor iron absorption, and bleeding in the stomach or intestines can cause iron deficiency. If your hemoglobin does not improve, your doctor may investigate ongoing blood loss or other causes.

When your body doesn't have enough iron to make hemoglobin, less oxygen reaches your tissues, causing:

• Tiredness and weakness
• Pale skin
• Shortness of breath or a fast heartbeat
• Headaches, dizziness, or lightheadedness
• Cold hands and feet
• Brittle or spoon-shaped nails
• A sore tongue or cracks at the corners of your mouth
• Restless legs
• Craving ice or non-food items (pica)

Mild anemia may cause no symptoms, and some low iron symptoms can start before your hemoglobin drops. You're at higher risk if you have heavy periods, are pregnant, follow a vegetarian or vegan diet, donate blood frequently, or have a digestive condition that affects iron absorption. Regular aspirin or NSAID use and endurance training can also increase your risk. If you're pregnant, read more about iron deficiency in pregnancy.

Some at-home finger-prick tests check ferritin, a protein that shows how much iron your body stores. However, these tests cannot diagnose iron-deficiency anemia on their own, and results may be inaccurate. The FDA advises discussing home test results with a healthcare professional.

To confirm iron deficiency, your doctor may recommend:

• Complete blood count (CBC): Measures your hemoglobin and red blood cell count to identify anemia.
• Ferritin test: Measures your stored iron and can detect iron deficiency before anemia develops.
• Additional iron tests: Serum iron, transferrin saturation, or total iron-binding capacity (TIBC) may help clarify your results.

Your doctor will interpret these results alongside your symptoms and medical history. You can get an online lab requisition and have your results reviewed without visiting a clinic for the consultation.

The fastest ways to raise hemoglobin are IV iron or a blood transfusion, but these are only used in severe or urgent cases.

For most people with iron-deficiency anemia, the first treatment is oral iron supplements.

After starting treatment, you may feel better within a week, but hemoglobin usually takes weeks to recover. Treatment generally means taking iron as directed, eating iron-rich foods with vitamin C, and having your blood count rechecked after a few weeks. Most people keep taking iron for about 3 months after their hemoglobin returns to normal to rebuild their iron stores and reduce the chance of anemia returning. For a closer look at how quickly levels rise, read our guide on how to increase hemoglobin.

Talk to a doctor if you have symptoms of iron-deficiency anemia, such as tiredness that doesn't improve with rest, pale skin, or shortness of breath, especially if you have heavy periods, are pregnant, or follow a vegetarian or vegan diet. A blood test can confirm the cause.

Most anemia can be diagnosed and treated by a primary care doctor, including an online doctor. An online doctor can review your symptoms and test results, arrange blood tests, prescribe iron when appropriate, and advise whether you need in-person care. You may be referred to a specialist, such as a hematologist (blood specialist), if the cause isn't clear or treatment isn't working.

If you already have a diagnosis of iron deficiency and your symptoms aren't improving on iron supplements, follow up with your doctor to check whether your treatment is working or needs adjusting. They can recheck your blood count and look for other causes if your hemoglobin isn't rising. Keep taking iron for as long as your doctor recommends, even once you feel better.

Get emergency care right away if you have chest pain, trouble breathing, fainting, vomiting blood, heavy rectal bleeding, or black, tarry stools, which can be signs of internal bleeding. Severe symptoms, blood transfusions, and endoscopies need in-person care.

Get your iron levels back on track, starting today

Talk to a licensed doctor, get your blood tests ordered, and start a treatment plan built around your results.