Iron studies and ferritin
Also written: Iron / ferritin
What it measures
Iron in the blood and the body's iron stores.
Why it is ordered
Often examined alongside a blood count when looking into prolonged fatigue.
How to prepare
Say if you take iron supplements and when you last took one.
Units
Ferritin: µg/L (= ng/mL) — convert here
What to ask
- Could my supplement distort this result
- Should the underlying cause be investigated
- When should it be rechecked
This page does not include reference ranges and does not say whether your number is high or low. Reference ranges differ between laboratories and between people — read yours on your own report, with your clinician.