Iron (Serum or Plasma Mass Concentration)

Why Might You Need This Test?

Your doctor may order this test if you have symptoms like fatigue, weakness, pale skin, or shortness of breath, which could indicate low iron levels. It’s also used to monitor iron status in people with conditions like heavy menstrual bleeding, pregnancy, or certain dietary deficiencies.

What Does a Low or High Iron Level Mean?

Low iron levels (iron deficiency) can lead to anemia, where your body doesn’t have enough healthy red blood cells. High iron levels may suggest conditions like hemochromatosis, where your body absorbs too much iron, or certain medications or supplements.

How Is This Test Performed?

A small blood sample is drawn from a vein in your arm. The sample is sent to a lab where it’s analyzed to measure iron concentration. No special preparation is usually needed, but fasting may be advised in some cases.

What Are Common Causes of Abnormal Results?

Iron deficiency often results from not getting enough iron in your diet, heavy blood loss (like from periods or injuries), or poor absorption in the gut. Overuse of iron supplements or certain medical conditions can also cause high iron levels.