All lab markers

Iron status

Transferrin Saturation

How much iron is actually being delivered to tissues. Below 20% is iron deficiency even when ferritin looks fine. Lower results are the ones to watch.

What commonly moves it

  • Iron deficiencyLow stores or poor delivery limit red-cell production and thyroid conversion.
  • Hepcidin

What it can affect downstream

These are commonly described physiological relationships, shared for education. They are not a diagnosis and cannot account for your medications, history, or symptoms โ€” discuss your results with a licensed clinician.

Watching Transferrin Saturation over time?

Dose Compass charts each draw, flags meaningful moves, and helps you prepare questions for your clinician.

Start tracking