Serum Iron
Serum iron is the amount of iron moving through your blood right now. It changes a lot during the day and after meals, so it's read together with ferritin and transferrin saturation.
Your reading
This app uses 60–170 mcg/dL. On its own, serum iron can be misleading: it's higher in the morning and after iron-rich meals or supplements. Ferritin shows your stores; serum iron shows what's in transit.
What may help
- —Testing in the morning, fasted, with no iron supplement in the last 24 hours
- —Iron-rich foods paired with vitamin C
- —Reading it next to ferritin rather than alone
When to talk to a doctor
If iron is low together with low ferritin, or high together with high transferrin saturation, which can point to iron overload.
Common questions
What is Serum Iron?
Serum iron is the amount of iron moving through your blood right now. It changes a lot during the day and after meals, so it's read together with ferritin and transferrin saturation.
What is a normal Serum Iron level?
Daygo uses 60–170 mcg/dL as the reference range. This app uses 60–170 mcg/dL. On its own, serum iron can be misleading: it's higher in the morning and after iron-rich meals or supplements. Ferritin shows your stores; serum iron shows what's in transit.
How can I improve my Serum Iron?
Testing in the morning, fasted, with no iron supplement in the last 24 hours. Iron-rich foods paired with vitamin C. Reading it next to ferritin rather than alone.
When should I see a doctor about Serum Iron?
If iron is low together with low ferritin, or high together with high transferrin saturation, which can point to iron overload.
Source: MedlinePlus (NIH). Reference ranges are standard adult intervals — your own lab may report a different range for your age, sex, or method. This isn't medical advice; always go by the range on your actual results and talk to a clinician about anything that concerns you.