Transferrin Saturation (TSAT) + iron-studies interpreter
Transferrin saturation = 100*iron/TIBC; with ferritin, characterizes iron-deficiency vs overload pattern.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Serum iron
- 30 ug/dL
- TIBC
- 450 ug/dL
- Ferritin
- 10 ng/mL
Result: TSAT 6.7% (absolute iron deficiency: low TSAT + low ferritin).
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Serum iron
- TIBC
- Ferritin (optional; separates absolute from functional deficiency)
How this is calculated
KDIGO Anemia in CKD work group and AGA/ACG iron-deficiency guidance. TSAT (%) = serum iron / TIBC x 100.
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.