Iron (Serum or Plasma Mass Concentration)

Why This Test Might Be Ordered

Your doctor may recommend this test if you have symptoms like fatigue, pale skin, weakness, or shortness of breath, which can be signs of low iron. It may also be checked during pregnancy, before surgery, or if you have conditions like heavy menstrual bleeding, gastrointestinal issues, or certain blood disorders.

What to Expect Before the Test

You’ll typically have blood drawn from a vein in your arm. No special preparation is usually needed, but inform your doctor about any medications you’re taking, especially those that affect blood clotting or iron levels.

What the Results Mean

Results are compared to a standard range for healthy adults, but exact values can vary by lab. Low iron levels may indicate anemia or iron deficiency, while very high levels could signal conditions like hemochromatosis or excessive iron intake.

Common Conditions Affecting Iron Levels

Conditions like chronic blood loss (e.g., heavy periods, ulcers), poor diet, or malabsorption (e.g., celiac disease) can lead to low iron. Overuse of supplements, certain medications, or genetic disorders (like hemochromatosis) may cause high iron levels.