What Are the Signs of Low Serum Iron?
The Top Signs of Low Serum Iron You Can’t Ignore
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Are you feeling fatigued, experiencing dizziness, noticing your skin looking paler than usual?
These could be signs that your serum iron levels are running low.
Iron is a nutrient that is essential for good health, and when it drops below optimal levels, its hard for you to go about your usual activities because of the symptoms it causes.
In this post, we will talk about the signs of low serum iron, the causes, and effective ways to recognize and address it.
So, if you’ve been wondering why you’re feeling less than your best, then keep on reading to know what happens when your serum iron levels are low and how to spot them.
What is Serum Iron?
Serum iron is a measure of iron circulating in your bloodstream.
In other words, serum iron is the amount of iron in the blood plasma. It is also a critical indicator of your body’s iron status.
When serum iron levels are balanced, your body functions optimally, but when it drops below the normal range, it can lead to several health issues.
According to world health organization, normal serum iron levels for adult men range from 65 to 175 µg/dL, while for adult women, it’s 50 to 150 µg/dL.
So, what causes your serum iron levels to drop drastically?
Low serum iron levels can be caused by a number of factors, including:
- Low intake of iron-rich foods
- Anemia
- Chronic kidney disease
- Long-term digestive tract bleeding
- Poor absorption of iron
- Heavy menstrual bleeding
- Frequent blood donation
- Pregnancy
- Rheumatoid arthritis
- Inflammatory bowel disease
- Antacids and Proton Pump Inhibitors
Diagnosing Low Serum Iron
Diagnosing low serum iron levels typically involves a combination of:
Medical History
- Symptoms:
- Fatigue
- Weakness
- Pale skin
- Shortness of breath
- Dizziness
- Headache
- Dietary habits:
- Poor iron intake (< 10 mg/day)
- Vegetarian/vegan diet
- Menstrual history (for women): Heavy menstrual bleeding (> 80 mL/cycle)
Physical Examination
- Pallor (pale skin)
- Conjunctival pallor (pale eyelids)
- Tachycardia (rapid heartbeat > 100 bpm)
- Poor nails (brittle, ridged)
Laboratory Tests
- Complete Blood Count (CBC):
- Hemoglobin (< 12 g/dL)
- Hematocrit (< 36%)
- Mean Corpuscular Volume (MCV) (< 80 fL)
- Serum Iron Test: < 50-60 μg/dL (indicative of iron deficiency)
- Total Iron-Binding Capacity (TIBC) Test: > 400 μg/dL (indicative of iron deficiency)
- Ferritin Test: < 15-20 ng/mL (indicative of iron deficiency)
- Transferrin Saturation Test: < 20% (indicative of iron deficiency)
Want to run all these tests? Go to healthlabs and get tested today!
Read also: Is your Ferritin Level Putting You at Risk for Iron Deficiency Anemia?
Additional Tests (if necessary)
- Iron deficiency anemia panel
- Vitamin B12 and folate tests
- Gastrointestinal evaluation (e.g., endoscopy, colonoscopy)
Treatment Options for Low Serum Iron Levels (Iron Deficiency)
Treatment for low serum iron depends on what’s causing it, whether the condition is mild or severe. Here are the treatment options:
Mild Iron Deficiency (Serum Iron 50-70 μg/dL, Ferritin 15-30 ng/mL)
- Dietary changes: Increase iron-rich foods:
- Red meat (3-4 mg/serving)
- Poultry (2-3 mg/serving)
- Fish (2-3 mg/serving)
- Legumes (lentils, chickpeas, black beans) (3-4 mg/serving)
- Fortified cereals (10-18 mg/serving)
- Enhance iron absorption:
- Vitamin C-rich foods (citrus fruits, bell peppers, tomatoes)
- Avoid tea, coffee, and milk with meals
- Oral iron supplements:
- Ferroussulfate (65 mg/day, 1 tablet/day)
- Ferrous gluconate (30 mg/day, 1 tablet/day)
Moderate Iron Deficiency (Serum Iron 30-50 μg/dL, Ferritin 10-15 ng/mL)
- Oral iron supplements:
- Ferrous sulfate (100-200 mg/day, 2-4 tablets/day)
- Ferrous gluconate (100-200 mg/day, 2-4 tablets/day)
- Controlled-release iron preparations (e.g., Ferrosul 100 mg/day)
- Intramuscular iron injections: Iron dextran (100-200 mg/mL, 1-2 mL/injection, 1-2 times/week)
Severe Iron Deficiency Anemia (Serum Iron <30 μg/dL, Ferritin <10 ng/mL)
- Intravenous iron infusions:
- Iron dextran (500-1000 mg, 1-2 infusions/week)
- Iron sucrose (500-1000 mg, 1-2 infusions/week)
- Blood transfusions (rarely necessary)
Additional Measures
- Address the causes:
- Menstrual bleeding management (hormonal therapy, birth control)
- Gastrointestinal disorder treatment (e.g., celiac disease, Crohn’s disease)
- Inflammatory condition management (e.g., rheumatoid arthritis)
- Monitor & adjust treatment:
- Regular blood tests (CBC, iron levels)
- Dosage adjustments
Prescription of Iron Supplements
- Ferrous sulfate (ferrosul) – 65 mg/tablet
- Ferrous gluconate (fergon) – 30 mg/tablet
- Iron dextran (infed) – 50 mg/mL
- Iron sucrose (venofer) – 20 mg/mL
- Ferric carboxymaltose (injectafer) – 15 mg/mL
Over-the-Counter (OTC) Iron Supplements
- Ferrous sulfate (Feosol) – 65 mg/tablet
- Ferrous gluconate – 30 mg/tablet
Best iron supplements for your dietary needs:
Additional Tips to Boost Serum Iron Levels
There are a few things you can do to help you prevent your serum iron from getting low, here are the tips:
- Eat a diet that is rich in iron-rich foods.
- Drink orange juice and eat other foods rich in vitamin C at the same time that you eat high-iron foods.
- Women who are experiencing menstrual bleeding should take iron supplements.
- If you are a vegetarian, make sure to get enough iron from plant-based sources, such as beans, lentils, and dark green leafy vegetables.
- Get regular blood tests to check your serum iron levels.
- Stay up-to-date on how to keep your iron levels healthy.
Takeaway
Keeping your serum iron levels in check is important for your health.
By knowing the signs and causes of low serum iron, and taking the right steps, you can stay energetic and healthy.
Remember, a balanced diet with iron-rich foods and vitamin C for better absorption can make a big difference in your health.
Don’t forget, regular blood tests will also help you stay on top of your iron levels and maintain your well-being.
