Serum Iron and Folic Acid Levels

Why These Tests Matter

Iron is essential for making hemoglobin, the protein in red blood cells that carries oxygen throughout your body. Low iron can lead to anemia, which may cause fatigue, pale skin, or shortness of breath. Folic acid is a B vitamin that helps your body produce healthy red blood cells and DNA. Deficiencies can also lead to anemia and other health issues, especially during pregnancy.

What to Expect Before the Test

You’ll likely have blood drawn from a vein in your arm. No special preparation is needed, but inform your doctor if you’re taking iron supplements or have a bleeding disorder. Fasting is not required for either test.

Common Causes of Low Levels

Iron deficiency often results from poor diet, heavy menstrual bleeding, pregnancy, or chronic blood loss. Folic acid deficiency may stem from diet low in leafy greens, alcohol use, or certain medications. Both deficiencies can also occur if your body doesn’t absorb nutrients properly.

Symptoms to Watch For

Fatigue, pale skin, weakness, or unusual tiredness are common signs of low iron or folic acid. Other symptoms may include headaches, dizziness, or a sore tongue. If you experience these, talk to your doctor about testing.