Ferritin and Iron Tests

What are they?

These tests help assess the body’s iron stores.

What do the results show?

• Ferritin – the most important indicator of the body’s iron stores.
• Serum iron – a single measurement that may fluctuate.
• Transferrin and transferrin saturation help provide a more accurate assessment of iron metabolism.

When are these tests performed?

• when anaemia is suspected;
• in cases of fatigue;
• in people who have heavy periods;
• when gastrointestinal bleeding is suspected;
• when haemochromatosis is suspected.

How should you prepare?

No special preparation is usually required. If you take iron supplements, tell your doctor.

Does a low ferritin level always mean anaemia?

No. Ferritin levels fall before haemoglobin levels, meaning that iron deficiency can be detected before anaemia develops.